catflap.org Online Dictionary Query

  Ortho- \Or"tho-\ ([^o]r"th[-o]-) pref. [Gr. 'orqo`s straight;
     akin to Skr. [=u]rdhva upright, v[.r]dh to grow, to cause to
     grow.]
     [1913 Webster]
     1. A combining form signifying straight, right, upright,
        correct, regular; as, orthodromy, orthodiagonal, orthodox,
        orthographic.
        [1913 Webster]
  
     2. (Chem.) A combining form (also used adjectively),
        designating:
        (a) (Inorganic Chem.) The one of several acids of the same
            element (as the phosphoric acids), which actually
            occurs with the greatest number of hydroxyl groups;
            as, orthophosphoric acid. Cf. Normal.
        (b) (Organic Chem.) Connection with, or affinity to, one
            variety of isomerism, characteristic of the benzene
            compounds; -- contrasted with meta- or para-; as,
            the ortho position; hence, designating any substance
            showing such isomerism; as, an ortho compound.
            [1913 Webster]
  
     Note: In the graphic representation of the benzene nucleus
           (see Benzene nucleus, under Benzene), provisionally
           adopted, any substance exhibiting double substitution
           in adjacent and contiguous carbon atoms, as 1 & 2, 3 &
           4, 4 & 5, etc., is designated by ortho-; as,
           orthoxylene; any substance exhibiting substitution of
           two carbon atoms with one intervening, as 1 & 3, 2 & 4,
           3 & 5, 4 & 6, etc., by meta-; as, resorcin or
           metaxylene; any substance exhibiting substitution in
           opposite parts, as 1 & 4, 2 & 5, 3 & 6, by para-; as,
           hydroquinone or paraxylene.
           [1913 Webster]

  Ortho- \Or"tho-\ [Gr. ? straight; akin to Skr. ?rdhva upright,
     vrdh to grow, to cause to grow.]
     1. A combining form signifying straight, right, upright,
        correct, regular; as, orthodromy, orthodiagonal, orthodox,
        orthographic.
  
     2. (Chem.) A combining form (also used adjectively),
        designating:
        (a) (Inorganic Chem.) The one of several acids of the same
            element (as the phosphoric acids), which actually
            occurs with the greatest number of hydroxyl groups;
            as, orthophosphoric acid. Cf. Normal.
        (b) (Organic Chem.) Connection with, or affinity to, one
            variety of isomerism, characteristic of the benzene
            compounds; -- contrasted with meta- or para-; as,
            the ortho position; hence, designating any substance
            showing such isomerism; as, an ortho compound.
  
     Note: In the graphic representation of the benzene nucleus
           (see Benzene nucleus, under Benzene), provisionally
           adopted, any substance exhibiting double substitution
           in adjacent and contiguous carbon atoms, as 1 & 2, 3 &
           4, 4 & 5, etc., is designated by ortho-; as,
           orthoxylene; any substance exhibiting substitution of
           two carbon atoms with one intervening, as 1 & 3, 2 & 4,
           3 & 5, 4 & 6, etc., by meta-; as, resorcin or
           metaxylene; any substance exhibiting substitution in
           opposite parts, as 1 & 4, 2 & 5, 3 & 6, by para-; as,
           hydroquinone or paraxylene.

  ortho
     n.
     (lb en countable chemistry) An isomer of a benzene derivative having
  two substituents adjacent on the ring.

  ortho-
     French pre.
     right
     pre.
     1 straight, right, proper.
     2 (lb en chemistry) Having an extra proportion of water.
     3 (lb en organic chemistry) in isomeric benzene derivatives, having
  the two substituents in adjacent (2,6) positions (compare meta- and
  para-).
     4 (lb en physics) of any molecule of the form
  X<sub>2</sub> in which the two nuclei have parallel spin.

  ortho
     n.
     (lb en countable chemistry) An isomer of a benzene derivative having
  two substituents adjacent on the ring.

  ortho-
     pre.
     1 straight, right, proper.
     2 (lb en chemistry) Having an extra proportion of water.
     3 (lb en organic chemistry) in isomeric benzene derivatives, having
  the two substituents in adjacent (2,6) positions (compare meta- and
  para-).
     4 (lb en physics) of any molecule of the form
  X<sub>2</sub> in which the two nuclei have parallel spin.

  ortho
     n.
     (lb en countable chemistry) An isomer of a benzene derivative having
  two substituents adjacent on the ring.

  ortho-
     French pre.
     right
     pre.
     1 straight, right, proper.
     2 (lb en chemistry) Having an extra proportion of water.
     3 (lb en organic chemistry) in isomeric benzene derivatives, having
  the two substituents in adjacent (2,6) positions (compare meta- and
  para-).
     4 (lb en physics) of any molecule of the form
  X<sub>2</sub> in which the two nuclei have parallel spin.

  ortho
     n.
     (lb en countable chemistry) An isomer of a benzene derivative having
  two substituents adjacent on the ring.

  ortho-
     French pre.
     right
     pre.
     1 straight, right, proper.
     2 (lb en chemistry) Having an extra proportion of water.
     3 (lb en organic chemistry) in isomeric benzene derivatives, having
  the two substituents in adjacent (2,6) positions (compare meta- and
  para-).
     4 (lb en physics) of any molecule of the form
  X<sub>2</sub> in which the two nuclei have parallel spin.

  ortho- /ˈɔʁto/
  ορθο-
  vorangestelltes Wortbildungselement in Fremdwörtern aus dem Griechischen mit der Bedeutung: gerade, aufrecht, richtig

  ortho- /ˈɔʁto/
  орто-, орфо-
  vorangestelltes Wortbildungselement in Fremdwörtern aus dem Griechischen mit der Bedeutung: gerade, aufrecht, richtig

  ortho- /ˈɔʁto/
  orto-
  vorangestelltes Wortbildungselement in Fremdwörtern aus dem Griechischen mit der Bedeutung: gerade, aufrecht, richtig

  ortho /ˈɔːθəʊ/
  orto

  ortho- /ˈɔːθəʊ/
  orto-

  ortho /ˈɔːθəʊ/
  1. (önek) doğru.

  
/ˈɔɹˌθoʊ/

     原; 直