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单词 orth-
释义

WordReference Random House Unabridged Dictionary of American English © 2024
orth-, 
  1. var. of ortho- before a vowel:orthicon.

Orth., 
  1. Orthodox.

orth., 
    1. Medicineorthopedic
    2. Medicineorthopedics.

WordReference Random House Unabridged Dictionary of American English © 2024
or•tho  (ôrthō),USA pronunciation adj. [Chem.]
  1. Chemistrypertaining to or occupying two adjacent positions in the benzene ring. Cf. meta 2, para 3.
  • independent use of ortho- 1875–80

ortho-, 
    1. a combining form occurring in loanwords from Greek, where it meant "straight,'' "upright,'' "right,'' "correct'' (orthodox) and on this model used in the formation of compound words (orthopedic).
    2. Chemistry
      • a combining form used in the name of that acid in a given series of acids that contains the most water (orthoboric acid). Cf. meta-, pyro-. 
      • Chemistrya combining form used in the names of the salts of these acids: if the acid ends in -ic, the corresponding salt ends in -ate (orthoboric acid (H3BO3) and potassium orthoborate (K3BO3))* if the acid ends in -ous, the corresponding salt ends in -ite (orthoantimonous acid (H3SbO3) and potassium orthoantimonite (K3SbO3)).
    Also,[esp. before a vowel,] orth-. 
    • Greek, combining form of orthós straight, upright, correct

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更新时间:2025/7/23 16:20:09