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49 definitions found

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


  Ion \I"on\ ([imac]"[o^]n), n. [Gr. 'io`n, neut, of 'iw`n, p. pr.
     of 'ie`nai to go.]
     1. (Elec. Chem.) an atom or goup of atoms (radical) carrying
        an electrical charge. It is contrasted with neutral atoms
        or molecules, and free radicals. Certain compounds, such
        as sodium chloride, are composed of complementary ions in
        the solid (crystalline) as well as in solution. Others,
        notably acids such as hydrogen chloride, may occur as
        neutral molecules in the pure liquid or gas forms, and
        ionize almost completely in dilute aqueous solutions. In
        solutions (as in water) ions are frequently bound
        non-covalently with the molecules of solvent, and in that
        case are said to be solvated. According to the
        electrolytic dissociation theory, the molecules of
        electrolytes are divided into ions by water and other
        solvents. An ion consists of one or more atoms and carries
        one unit charges of electricity, 3.4 x 10^{-10
        electrostatic units, or a multiple of this. Those which
        are positively electrified (hydrogen and the metals) are
        called cations; negative ions (hydroxyl and acidic atoms
        or groups) are called anions.
  
     Note: Thus, hydrochloric acid ({HCl) dissociates, in aqueous
           solution, into the hydrogen ion, H+, and the chlorine
           ion, Cl-; ferric nitrate, Fe(NO3)3, yields the
           ferric ion, Fe+++, and nitrate ions, NO3-, NO3-,
           NO3-. When a solution containing ions is made part of
           an electric circuit, the cations move toward the
           cathode, the anions toward the anode. This movement is
           called migration, and the velocity of it differs for
           different kinds of ions. If the electromotive force is
           sufficient, electrolysis ensues: cations give up their
           charge at the cathode and separate in metallic form or
           decompose water, forming hydrogen and alkali;
           similarly, at the anode the element of the anion
           separates, or the metal of the anode is dissolved, or
           decomposition occurs. Aluminum and chlorine are
           elements prepared predominantly by such electrolysis,
           and depends on dissolving compounds in a solvent where
           the element forms ions. Electrolysis is also used in
           refining other metals, such as copper and silver. Cf.
           Anion, Cation.
           [Webster 1913 Suppl.]
  
     2. One of the small electrified particles into which the
        molecules of a gas are broken up under the action of the
        electric current, of ultraviolet and certain other rays,
        and of high temperatures. To the properties and behavior
        of ions the phenomena of the electric discharge through
        rarefied gases and many other important effects are
        ascribed. At low pressures the negative ions appear to be
        electrons; the positive ions, atoms minus an electron. At
        ordinary pressures each ion seems to include also a number
        of attached molecules. Ions may be formed in a gas in
        various ways.
        [Webster 1913 Suppl.]

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


  Symbol \Sym"bol\ (s[i^]m"b[o^]l), n. [L. symbolus, symbolum, Gr.
     sy`mbolon a sign by which one knows or infers a thing, from
     symba`llein to throw or put together, to compare; sy`n with +
     ba`llein to throw: cf. F. symbole. Cf. Emblem, Parable.]
     1. A visible sign or representation of an idea; anything
        which suggests an idea or quality, or another thing, as by
        resemblance or by convention; an emblem; a representation;
        a type; a figure; as, the lion is the symbol of courage;
        the lamb is the symbol of meekness or patience.
        [1913 Webster]
  
              A symbol is a sign included in the idea which it
              represents, e. g., an actual part chosen to
              represent the whole, or a lower form or species used
              as the representative of a higher in the same kind.
                                                    --Coleridge.
        [1913 Webster]
  
     2. (Math.) Any character used to represent a quantity, an
        operation, a relation, or an abbreviation.
        [1913 Webster]
  
     Note: In crystallography, the symbol of a plane is the
           numerical expression which defines its position
           relatively to the assumed axes.
           [1913 Webster]
  
     3. (Theol.) An abstract or compendium of faith or doctrine; a
        creed, or a summary of the articles of religion.
        [1913 Webster]
  
     4. [Gr. ? contributions.] That which is thrown into a common
        fund; hence, an appointed or accustomed duty. [Obs.]
        [1913 Webster]
  
              They do their work in the days of peace . . . and
              come to pay their symbol in a war or in a plague.
                                                    --Jer. Taylor.
        [1913 Webster]
  
     5. Share; allotment. [Obs.]
        [1913 Webster]
  
              The persons who are to be judged . . . shall all
              appear to receive their symbol.       --Jer. Taylor.
        [1913 Webster]
  
     6. (Chem.) An abbreviation standing for the name of an
        element and consisting of the initial letter of the Latin
        or New Latin name, or sometimes of the initial letter with
        a following one; as, C for carbon, Na for sodium
        (Natrium), Fe for iron (Ferrum), Sn for tin (Stannum),
        Sb for antimony (Stibium), etc. See the list of names
        and symbols under Element.
        [1913 Webster]
  
     Note: In pure and organic chemistry there are symbols not
           only for the elements, but also for their grouping in
           formulas, radicals, or residues, as evidenced by their
           composition, reactions, synthesis, etc. See the diagram
           of Benzene nucleus, under Benzene.
           [1913 Webster]
  
     Syn: Emblem; figure; type. See Emblem.
          [1913 Webster]

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) : [ vera ]


  FE
       Forschung und Entwicklung, "F&E"

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) : [ vera ]


  FE
       Functional Entity (IN)

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


  Symbol \Sym"bol\, n. [L. symbolus, symbolum, Gr. sy`mbolon a
     sign by which one knows or infers a thing, from ? to throw or
     put together, to compare; sy`n with + ? to throw: cf. F.
     symbole. Cf. Emblem, Parable.]
     1. A visible sign or representation of an idea; anything
        which suggests an idea or quality, or another thing, as by
        resemblance or by convention; an emblem; a representation;
        a type; a figure; as, the lion is the symbol of courage;
        the lamb is the symbol of meekness or patience.
  
              A symbol is a sign included in the idea which it
              represents, e. g., an actual part chosen to
              represent the whole, or a lower form or species used
              as the representative of a higher in the same kind.
                                                    --Coleridge.
  
     2. (Math.) Any character used to represent a quantity, an
        operation, a relation, or an abbreviation.
  
     Note: In crystallography, the symbol of a plane is the
           numerical expression which defines its position
           relatively to the assumed axes.
  
     3. (Theol.) An abstract or compendium of faith or doctrine; a
        creed, or a summary of the articles of religion.
  
     4. [Gr. ? contributions.] That which is thrown into a common
        fund; hence, an appointed or accustomed duty. [Obs.]
  
              They do their work in the days of peace . . . and
              come to pay their symbol in a war or in a plague.
                                                    --Jer. Taylor.
  
     5. Share; allotment. [Obs.]
  
              The persons who are to be judged . . . shall all
              appear to receive their symbol.       --Jer. Taylor.
  
     6. (Chem.) An abbreviation standing for the name of an
        element and consisting of the initial letter of the Latin
        or New Latin name, or sometimes of the initial letter with
        a following one; as, C for carbon, Na for sodium
        (Natrium), Fe for iron (Ferrum), Sn for tin (Stannum),
        Sb for antimony (Stibium), etc. See the list of names
        and symbols under Element.
  
     Note: In pure and organic chemistry there are symbols not
           only for the elements, but also for their grouping in
           formulas, radicals, or residues, as evidenced by their
           composition, reactions, synthesis, etc. See the diagram
           of Benzene nucleus, under Benzene.
  
     Syn: Emblem; figure; type. See Emblem.

From WordNet (r) 2.0 : [ wn ]


  Fe
       n : a heavy ductile magnetic metallic element; is silver-white
           in pure form but readily rusts; used in construction and
           tools and armament; plays a role in the transport of
           oxygen by the blood [syn: iron, atomic number 26]

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


  f-e
     Slovene n.
     {form+of|sl|(glossary:+accusative)+(glossary:+plural)|f" rel="nofollow">{form of|sl|(glossary: accusative) (glossary: plural)|f

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


  f.e.
     adv.
     (lb en rare) (initialism of en for example)
     alt.
     (lb en rare) (initialism of en for example)

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


  fe
     Catalan n.
     faith
     Danish n.
     fairy, fay (gloss: mythical being (of female gender))
     Galician n.
     1 faith
     2 confidence, belief
     Ido n.
     (non-gloss definition The name of the Appendix:Latin script Latin
  script letter '''F'''/'''f'''.)
     Mandarin roman.
     (nonstandard spelling of cmn fē)
     Norwegian Bokmål n.
     a (l en fairy) (q: mythical being)
     Norwegian Bokmål n.
     1 (l en cattle), (l en livestock)
     2 (l en fool), (l en blockhead)
     Occitan n.
     faith
     Romanian interj.
     (obsolete form of ro fă)
     Swedish n.
     c fairy (gloss: mythological being)
     Turkmen n.
     (Latn-def tk name F f)

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


  Fe
     n.
     https://en.wikipedia.org/wiki/American%20Library%20Association
  abbreviation for forty-eighth, a book size (7.5-10 cm in height); a book
  of that height.
     Translingual sym.
     (lb mul element symbol) iron.

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


  FE
     n.
     (lb en UK education) (initialism of en further education)
     n.
     (lb en automotive sport) (abbreviation of en Formula E)

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


  f.e.
     adv.
     (lb en rare) (initialism of en for example)
     alt.
     (lb en rare) (initialism of en for example)

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


  Fe
     n.
     https://en.wikipedia.org/wiki/American%20Library%20Association
  abbreviation for forty-eighth, a book size (7.5-10 cm in height); a book
  of that height.

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


  FE
     n.
     (lb en UK education) (initialism of en further education)
     n.
     (lb en automotive sport) (abbreviation of en Formula E)