| 释义 | o-
 o-prefix  short for ortho-4O, o(oʊ)
 n.,  pl.  O's Os, o's os oes.   1.  the 15th letter of the English alphabet, a vowel.    2.  any spoken sound represented by this letter.    3.  something shaped like an O.    4.  a written or printed representation of the letter O or  o.
 O(oʊ)
 interj.,  n.,  pl.  O's. interj.    1.  (used before a name in direct address, esp. in solemn or poetic language, to lend earnestness to an appeal):  Hear, O Israel!    2.  (used as an expression of surprise, pain, annoyance, longing, gladness, etc.)  n.    3.  the exclamation “O.”  [1125–75; Middle English < Old French < Latin ō]
 O1.  Old.    2.  Gram. object.OSymbol.   1.  the 15th in order or in a series.    2.  the Arabic numeral; zero; cipher.    3.  a major blood group. Compare ABO system.    4.  oxygen.
 o'(ə, ō),
 prep.    1.  of:  o'clock; will-o'-the-wisp.    2.  Chiefly Dial. on.  [Middle English; by shortening.]
 O'a prefix meaning “descendant,” in Irish family names:  O'Brien; O'Connor.  [representing Irish ó descendant, Old Irish au]o-1, Chem.  ortho-.o-2,  var. of ob- before  m: omission.o-3,  var. of oo-:  oidium.-o-the typical ending of the first element of compounds of Greek origin, used regularly in forming new compounds with elements of Greek origin and often used in English as a connective irrespective of etymology: Franco-Italian; geography; seriocomic; speedometer. Compare -i-.  [Middle English (< Old French) < Latin < Greek]-o1.  a suffix occurring as the final element in informal shortenings of nouns (ammo; combo; promo); -o also forms nouns, usu. derogatory, for persons or things exemplifying or associated with that specified by the base noun or adjective (pinko; weirdo; wino).    2.  a suffix occurring in informal noun or adjective derivatives, usu. grammatically isolated, as in address:  kiddo; neato; righto.O.1.  pint. [< Latin octārius]    2.  October.    3.  Ohio.o.1.  ocean.    2.  pint. [< Latin octārius]    3.  octavo.    4.  off.    5.  old.    6.  only.    7.  order.    8.  out.  EncyclopediaSeeOo-
 o-symbol used in chemistry for ortho-.o-In chemistry, the abbreviation for ortho- (2). |