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13 definitions found
From The Collaborative International Dictionary of English v.0.44 :   [ gcide ]

  Homology \Ho*mol"o*gy\, n. [Gr. ? agreement. See Homologous.]
     1. The quality of being homologous; correspondence; relation;
        as, the homologyof similar polygons.
        [1913 Webster]
  
     2. (Biol.) Correspondence or relation in type of structure in
        contradistinction to similarity of function; as, the
        relation in structure between the leg and arm of a man; or
        that between the arm of a man, the fore leg of a horse,
        the wing of a bird, and the fin of a fish, all these
        organs being modifications of one type of structure.
        [1913 Webster]
  
     Note: Homology indicates genetic relationship, and according
           to Haeckel special homology should be defined in terms
           of identity of embryonic origin. See Homotypy, and
           Homogeny.
           [1913 Webster]
  
     3. (Chem.) The correspondence or resemblance of substances
        belonging to the same type or series; a similarity of
        composition varying by a small, regular difference, and
        usually attended by a regular variation in physical
        properties; as, there is an homology between methane,
        CH4, ethane, C2H6, propane, C3H8, etc., all members
        of the paraffin series. In an extended sense, the term is
        applied to the relation between chemical elements of the
        same group; as, chlorine, bromine, and iodine are said to
        be in homology with each other. Cf. Heterology.
        [1913 Webster]
  
     General homology (Biol.), the higher relation which a
        series of parts, or a single part, bears to the
        fundamental or general type on which the group is
        constituted. --Owen.
  
     Serial homology (Biol.), representative or repetitive
        relation in the segments of the same organism, -- as in
        the lobster, where the parts follow each other in a
        straight line or series. --Owen. See Homotypy.
  
     Special homology (Biol.), the correspondence of a part or
        organ with those of a different animal, as determined by
        relative position and connection. --Owen.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.44 :   [ gcide ]

  Methane \Meth"ane\, n. [See Methal.] (Chem.)
     A light, colorless, gaseous, inflammable hydrocarbon, CH4;
     marsh gas. It is the simplest of the aliphatic hydrocarbons.
     See Marsh gas, under Gas.
     [1913 Webster]
  
     Methane series (Chem.), a series of saturated hydrocarbons,
        of which methane is the first member and type, and
        (because of their general chemical inertness and
        indifference) called also the paraffin (little affinity)
        series. The lightest members are gases, as methane,
        ethane; intermediate members are liquids, as hexane,
        heptane, etc. (found in benzine, kerosene, etc.); while
        the highest members are white, waxy, or fatty solids, as
        paraffin proper.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.44 :   [ gcide ]

  Type \Type\, n. [F. type; cf. It. tipo, from L. typus a figure,
     image, a form, type, character, Gr. ? the mark of a blow,
     impression, form of character, model, from the root of ? to
     beat, strike; cf. Skr. tup to hurt.]
     [1913 Webster]
     1. The mark or impression of something; stamp; impressed
        sign; emblem.
        [1913 Webster]
  
              The faith they have in tennis, and tall stockings,
              Short blistered breeches, and those types of travel.
                                                    --Shak.
        [1913 Webster]
  
     2. Form or character impressed; style; semblance.
        [1913 Webster]
  
              Thy father bears the type of king of Naples. --Shak.
        [1913 Webster]
  
     3. A figure or representation of something to come; a token;
        a sign; a symbol; -- correlative to antitype.
        [1913 Webster]
  
              A type is no longer a type when the thing typified
              comes to be actually exhibited.       --South.
        [1913 Webster]
  
     4. That which possesses or exemplifies characteristic
        qualities; the representative. Specifically:
        (a) (Biol.) A general form or structure common to a number
            of individuals; hence, the ideal representation of a
            species, genus, or other group, combining the
            essential characteristics; an animal or plant
            possessing or exemplifying the essential
            characteristics of a species, genus, or other group.
            Also, a group or division of animals having a certain
            typical or characteristic structure of body maintained
            within the group.
            [1913 Webster]
  
                  Since the time of Cuvier and Baer . . . the
                  whole animal kingdom has been universally held
                  to be divisible into a small number of main
                  divisions or types.               --Haeckel.
            [1913 Webster]
        (b) (Fine Arts) The original object, or class of objects,
            scene, face, or conception, which becomes the subject
            of a copy; esp., the design on the face of a medal or
            a coin.
            [1913 Webster]
        (c) (Chem.) A simple compound, used as a mode or pattern
            to which other compounds are conveniently regarded as
            being related, and from which they may be actually or
            theoretically derived.
            [1913 Webster]
  
     Note: The fundamental types used to express the simplest and
           most essential chemical relations are hydrochloric
           acid, HCl; water, H2O; ammonia, NH3; and methane,
           CH4.
           [1913 Webster]
  
     5. (Typog.)
        (a) A raised letter, figure, accent, or other character,
            cast in metal or cut in wood, used in printing.
        (b) Such letters or characters, in general, or the whole
            quantity of them used in printing, spoken of
            collectively; any number or mass of such letters or
            characters, however disposed.
            [1913 Webster]
  
     Note: Type are mostly made by casting type metal in a mold,
           though some of the larger sizes are made from maple,
           mahogany, or boxwood. In the cut, a is the body; b, the
           face, or part from which the impression is taken; c,
           the shoulder, or top of the body; d, the nick
           (sometimes two or more are made), designed to assist
           the compositor in distinguishing the bottom of the face
           from t`e top; e, the groove made in the process of
           finishing, -- each type as cast having attached to the
           bottom of the body a jet, or small piece of metal
           (formed by the surplus metal poured into the mold),
           which, when broken off, leaves a roughness that
           requires to be removed. The fine lines at the top and
           bottom of a letter are technically called ceriphs, and
           when part of the face projects over the body, as in the
           letter f, the projection is called a kern.
           [1913 Webster] The type which compose an ordinary book
           font consist of Roman CAPITALS, small capitals, and
           lower-case letters, and Italic CAPITALS and lower-case
           letters, with accompanying figures, points, and
           reference marks, -- in all about two hundred
           characters. Including the various modern styles of
           fancy type, some three or four hundred varieties of
           face are made. Besides the ordinary Roman and Italic,
           some of the most important of the varieties are 
           [1913 Webster] Old English. Black Letter. Old Style.
           French Elzevir. Boldface. Antique. Clarendon. Gothic.
           Typewriter. Script.
           [1913 Webster] The smallest body in common use is
           diamond; then follow in order of size, pearl, agate,
           nonpareil, minion, brevier, bourgeois (or two-line
           diamond), long primer (or two-line pearl), small pica
           (or two-line agate), pica (or two-line nonpareil),
           English (or two-line minion), Columbian (or two-line
           brevier), great primer (two-line bourgeois), paragon
           (or two-line long primer), double small pica (or
           two-line small pica), double pica (or two-line pica),
           double English (or two-line English), double great
           primer (or two-line great primer), double paragon (or
           two-line paragon), canon (or two-line double pica).
           Above this, the sizes are called five-line pica,
           six-line pica, seven-line pica, and so on, being made
           mostly of wood. The following alphabets show the
           different sizes up to great primer.
           [1913 Webster] Brilliant . . abcdefghijklmnopqrstuvwxyz
           Diamond . . abcdefghijklmnopqrstuvwxyz Pearl . . .
           abcdefghijklmnopqrstuvwxyz Agate . . .
           abcdefghijklmnopqrstuvwxyz Nonpareil . . .
           abcdefghijklmnopqrstuvwxyz Minion . . .
           abcdefghijklmnopqrstuvwxyz Brevier . . .
           abcdefghijklmnopqrstuvwxyz Bourgeois . .
           abcdefghijklmnopqrstuvwxyz Long primer . . .
           abcdefghijklmnopqrstuvwxyz Small pica . .
           abcdefghijklmnopqrstuvwxyz Pica . . . . .
           abcdefghijklmnopqrstuvwxyz English . . .
           abcdefghijklmnopqrstuvwxyz Columbian . . .
           abcdefghijklmnopqrstuvwxyz Great primer . . .
           abcdefghijklmnopqrstuvwxyz
           [1913 Webster] The foregoing account is conformed to
           the designations made use of by American type founders,
           but is substantially correct for England. Agate,
           however, is called ruby, in England, where, also, a
           size intermediate between nonpareil and minion is
           employed, called emerald.
           [1913 Webster]
  
     Point system of type bodies (Type Founding), a system
        adopted by the type founders of the United States by which
        the various sizes of type have been so modified and
        changed that each size bears an exact proportional
        relation to every other size. The system is a modification
        of a French system, and is based on the pica body. This
        pica body is divided into twelfths, which are termed
        ``points,'' and every type body consist of a given number
        of these points. Many of the type founders indicate the
        new sizes of type by the number of points, and the old
        names are gradually being done away with. By the point
        system type founders cast type of a uniform size and
        height, whereas formerly fonts of pica or other type made
        by different founders would often vary slightly so that
        they could not be used together. There are no type in
        actual use corresponding to the smaller theoretical sizes
        of the point system. In some cases, as in that of ruby,
        the term used designates a different size from that
        heretofore so called.
        [1913 Webster] 1 American 9 Bourgeois [bar] [bar] 11/2
        German [bar] 2 Saxon 10 Long Primer [bar] [bar] 21/2 Norse
        [bar] 3 Brilliant 11 Small Pica [bar] [bar] 31/2 Ruby 12
        Pica [bar] [bar] 4 Excelsior [bar] 41/2 Diamond 14 English
        [bar] [bar] 5 Pearl 16 Columbian [bar] [bar] 51/2 Agate
        [bar] 6 Nonpareil 18 Great Primer [bar] [bar] 7 Minion
        [bar] 8 Brevier 20 Paragon [bar] [bar] Diagram of the
        "points" by which sizes of Type are graduated in the
        "Point System".
        [1913 Webster]
  
     Type founder, one who casts or manufacture type.
  
     Type foundry, Type foundery, a place for the manufacture
        of type.
  
     Type metal, an alloy used in making type, stereotype
        plates, etc., and in backing up electrotype plates. It
        consists essentially of lead and antimony, often with a
        little tin, nickel, or copper.
  
     Type wheel, a wheel having raised letters or characters on
        its periphery, and used in typewriters, printing
        telegraphs, etc.
  
     Unity of type (Biol.), that fundamental agreement in
        structure which is seen in organic beings of the same
        class, and is quite independent of their habits of life.
        --Darwin.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.44 :   [ gcide ]

  Carbureted \Car"bu*ret`ed\, a.
     1. (Chem.) Combined with carbon in the manner of a carburet
        or carbide.
        [1913 Webster]
  
     2. Saturated or impregnated with some volatile carbon
        compound; as, water gas is carbureted to increase its
        illuminating power. [Written also carburetted.]
        [1913 Webster]
  
     Carbureted hydrogen gas, any one of several gaseous
        compounds of carbon and hydrogen, some of with make up
        illuminating gas.
  
     Light+carbureted+hydrogen,+methane+({CH4" rel="nofollow">Light carbureted hydrogen, methane ({CH4), also called
        marsh gas, and fire damp.
        [1913 Webster +PJC]

From Webster's Revised Unabridged Dictionary (1913) :   [ web1913 ]

  Methane \Meth"ane\, n. [See Methal.] (Chem.)
     A light, colorless, gaseous, inflammable hydrocarbon, CH4;
     marsh gas. See Marsh gas, under Gas.
  
     Methane series (Chem.), a series of saturated hydrocarbons,
        of which methane is the first member and type, and
        (because of their general chemical inertness and
        indifference) called also the paraffin (little affinity)
        series. The lightest members are gases, as methane,
        ethane; intermediate members are liquids, as hexane,
        heptane, etc. (found in benzine, kerosene, etc.); while
        the highest members are white, waxy, or fatty solids, as
        paraffin proper.

From Webster's Revised Unabridged Dictionary (1913) :   [ web1913 ]

  Type \Type\, n. [F. type; cf. It. tipo, from L. typus a figure,
     image, a form, type, character, Gr. ? the mark of a blow,
     impression, form of character, model, from the root of ? to
     beat, strike; cf. Skr. tup to hurt.]
     1. The mark or impression of something; stamp; impressed
        sign; emblem.
  
              The faith they have in tennis, and tall stockings,
              Short blistered breeches, and those types of travel.
                                                    --Shak.
  
     2. Form or character impressed; style; semblance.
  
              Thy father bears the type of king of Naples. --Shak.
  
     3. A figure or representation of something to come; a token;
        a sign; a symbol; -- correlative to antitype.
  
              A type is no longer a type when the thing typified
              comes to be actually exhibited.       --South.
  
     4. That which possesses or exemplifies characteristic
        qualities; the representative. Specifically:
        (a) (Biol.) A general form or structure common to a number
            of individuals; hence, the ideal representation of a
            species, genus, or other group, combining the
            essential characteristics; an animal or plant
            possessing or exemplifying the essential
            characteristics of a species, genus, or other group.
            Also, a group or division of animals having a certain
            typical or characteristic structure of body maintained
            within the group.
  
                  Since the time of Cuvier and Baer . . . the
                  whole animal kingdom has been universally held
                  to be divisible into a small number of main
                  divisions or types.               --Haeckel.
        (b) (Fine Arts) The original object, or class of objects,
            scene, face, or conception, which becomes the subject
            of a copy; esp., the design on the face of a medal or
            a coin.
        (c) (Chem.) A simple compound, used as a mode or pattern
            to which other compounds are conveniently regarded as
            being related, and from which they may be actually or
            theoretically derived.
  
     Note: The fundamental types used to express the simplest and
           most essential chemical relations are hydrochloric
           acid, HCl; water, H2O; ammonia, NH3; and methane,
           CH4.
  
     5. (Typog.)
        (a) A raised letter, figure, accent, or other character,
            cast in metal or cut in wood, used in printing.
        (b) Such letters or characters, in general, or the whole
            quantity of them used in printing, spoken of
            collectively; any number or mass of such letters or
            characters, however disposed.
  
     Note: Type are mostly made by casting type metal in a mold,
           though some of the larger sizes are made from maple,
           mahogany, or boxwood. In the cut, a is the body; b, the
           face, or part from which the impression is taken; c,
           the shoulder, or top of the body; d, the nick
           (sometimes two or more are made), designed to assist
           the compositor in distinguishing the bottom of the face
           from the top; e, the groove made in the process of
           finishing, -- each type as cast having attached to the
           bottom of the body a jet, or small piece of metal
           (formed by the surplus metal poured into the mold),
           which, when broken off, leaves a roughness that
           requires to be removed. The fine lines at the top and
           bottom of a letter are technically called ceriphs, and
           when part of the face projects over the body, as in the
           letter f, the projection is called a kern. The type
           which compose an ordinary book font consist of Roman
           CAPITALS, small capitals, and lower-case letters, and
           Italic CAPITALS and lower-case letters, with
           accompanying figures, points, and reference marks, --
           in all about two hundred characters. Including the
           various modern styles of fancy type, some three or four
           hundred varieties of face are made. Besides the
           ordinary Roman and Italic, some of the most important
           of the varieties are -- Old English. Black Letter. Old
           Style. French Elzevir. Boldface. Antique. Clarendon.
           Gothic. Typewriter. Script. The smallest body in common
           use is diamond; then follow in order of size, pearl,
           agate, nonpareil, minion, brevier, bourgeois (or
           two-line diamond), long primer (or two-line pearl),
           small pica (or two-line agate), pica (or two-line
           nonpareil), English (or two-line minion), Columbian (or
           two-line brevier), great primer (two-line bourgeois),
           paragon (or two-line long primer), double small pica
           (or two-line small pica), double pica (or two-line
           pica), double English (or two-line English), double
           great primer (or two-line great primer), double paragon
           (or two-line paragon), canon (or two-line double pica).
           Above this, the sizes are called five-line pica,
           six-line pica, seven-line pica, and so on, being made
           mostly of wood. The following alphabets show the
           different sizes up to great primer. Brilliant . .
           abcdefghijklmnopqrstuvwxyz

From Webster's Revised Unabridged Dictionary (1913) :   [ web1913 ]

  Carbureted \Car"bu*ret`ed\, a.
     1. (Chem.) Combined with carbon in the manner of a carburet
        or carbide.
  
     2. Saturated or impregnated with some volatile carbon
        compound; as, water gas is carbureted to increase its
        illuminating power. [Written also carburetted.]
  
     Carbureted hydrogen gas, any one of several gaseous
        compounds of carbon and hydrogen, some of with make up
        illuminating gas.
  
     Light carbureted hydrogen, marsh gas, CH4; fire damp

From Webster's Revised Unabridged Dictionary (1913) :   [ web1913 ]

  
  
     Gas fitter, one who lays pipes and puts up fixtures for
        gas.
  
     Gas fitting.
        (a) The occupation of a gas fitter.
        (b) pl. The appliances needed for the introduction of gas
            into a building, as meters, pipes, burners, etc.
  
     Gas fixture, a device for conveying illuminating or
        combustible gas from the pipe to the gas-burner,
        consisting of an appendage of cast, wrought, or drawn
        metal, with tubes upon which the burners, keys, etc., are
        adjusted.
  
     Gas generator, an apparatus in which gas is evolved; as:
        (a) a retort in which volatile hydrocarbons are evolved by
            heat;
        (b) a machine in which air is saturated with the vapor of
            liquid hydrocarbon; a carburetor;
        (c) a machine for the production of carbonic acid gas, for
            a["e]rating water, bread, etc. --Knight.
  
     Gas jet, a flame of illuminating gas.
  
     Gas machine, an apparatus for carbureting air for use as
        illuminating gas.
  
     Gas meter, an instrument for recording the quantity of gas
        consumed in a given time, at a particular place.
  
     Gas retort, a retort which contains the coal and other
        materials, and in which the gas is generated, in the
        manufacture of gas.
  
     Gas stove, a stove for cooking or other purposes, heated by
        gas.
  
     Gas tar, coal tar.
  
     Gas trap, a drain trap; a sewer trap. See 4th Trap, 5.
  
     Gas washer (Gas Works), an apparatus within which gas from
        the condenser is brought in contact with a falling stream
        of water, to precipitate the tar remaining in it.
        --Knight.
  
     Gas water, water through which gas has been passed for
        purification; -- called also gas liquor and ammoniacal
        water, and used for the manufacture of sal ammoniac,
        carbonate of ammonia, and Prussian blue. --Tomlinson.
  
     Gas well, a deep boring, from which natural gas is
        discharged. --Raymond.
  
     Gas works, a manufactory of gas, with all the machinery and
        appurtenances; a place where gas is generated for lighting
        cities.
  
     Laughing gas. See under Laughing.
  
     Marsh gas (Chem.), a light, combustible, gaseous
        hydrocarbon, CH4, produced artificially by the dry
        distillation of many organic substances, and occurring as
        a natural product of decomposition in stagnant pools,
        whence its name. It is an abundant ingredient of ordinary
        illuminating gas, and is the first member of the paraffin
        series. Called also methane, and in coal mines, fire
        damp.
  
     Natural gas, gas obtained from wells, etc., in
        Pennsylvania, Ohio, and elsewhere, and largely used for
        fuel and illuminating purposes. It is chiefly derived from
        the Coal Measures.
  
     Olefiant gas (Chem.). See Ethylene.
  
     Water gas (Chem.), a kind of gas made by forcing steam over
        glowing coals, whereby there results a mixture of hydrogen
        and carbon monoxide. This gives a gas of intense heating
        power, but destitute of light-giving properties, and which
        is charged by passing through some volatile hydrocarbon,
        as gasoline.

From Webster's Revised Unabridged Dictionary (1913) :   [ web1913 ]

  Homology \Ho*mol"o*gy\, n. [Gr. ? agreement. See Homologous.]
     1. The quality of being homologous; correspondence; relation;
        as, the homologyof similar polygons.
  
     2. (Biol.) Correspondence or relation in type of structure in
        contradistinction to similarity of function; as, the
        relation in structure between the leg and arm of a man; or
        that between the arm of a man, the fore leg of a horse,
        the wing of a bird, and the fin of a fish, all these
        organs being modifications of one type of structure.
  
     Note: Homology indicates genetic relationship, and according
           to Haeckel special homology should be defined in terms
           of identity of embryonic origin. See Homotypy, and
           Homogeny.
  
     3. (Chem.) The correspondence or resemblance of substances
        belonging to the same type or series; a similarity of
        composition varying by a small, regular difference, and
        usually attended by a regular variation in physical
        properties; as, there is an homology between methane,
        CH4, ethane, C2H6, propane, C3H8, etc., all members
        of the paraffin series. In an extended sense, the term is
        applied to the relation between chemical elements of the
        same group; as, chlorine, bromine, and iodine are said to
        be in homology with each other. Cf. Heterology.
  
     General homology (Biol.), the higher relation which a
        series of parts, or a single part, bears to the
        fundamental or general type on which the group is
        constituted. --Owen.
  
     Serial homology (Biol.), representative or repetitive
        relation in the segments of the same organism, -- as in
        the lobster, where the parts follow each other in a
        straight line or series. --Owen. See Homotypy.
  
     Special homology (Biol.), the correspondence of a part or
        organ with those of a different animal, as determined by
        relative position and connection. --Owen.

From English Wiktionary: All languages (2023-07-27) :   [ dictinfo.com:wikt-en-ALL-2023-07-27 ]

  CH4
     Translingual sym.
     (lb mul organic compound) (alternative spelling of mul CH₄)

From English Wiktionary: English language only (2023-07-27) :   [ dictinfo.com:wikt-en-en-2023-07-27 ]

  CH4
     n.
     (abbreviation of en https://en.wikipedia.org/wiki/Channel%204)

From English Wiktionary: Western, Greek, and Slavonic languages only (2023-07-27) :   [ dictinfo.com:wikt-en-Western_Greek_Slavonic-2023-07-27 ]

  CH4
     Translingual sym.
     (lb mul organic compound) (alternative spelling of mul CH₄)

From English Wiktionary: Western languages only (2023-07-27) :   [ dictinfo.com:wikt-en-Western-2023-07-27 ]

  CH4
     Translingual sym.
     (lb mul organic compound) (alternative spelling of mul CH₄)

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