| 释义 |
ortho-enUK
ortho-(word root) straightExamples of words with the root ortho-: orthodontiaortho- or orth-pref.1. Straight; upright; vertical: orthotropous.2. Perpendicular: orthorhombic.3. Correct; correction: orthopsychiatry.4. The most fully hydrated form of an acid or of its salts: orthoboric acid.5. Of or relating to one of three possible isomers of a benzene ring with two attached chemical groups in which the carbon atoms with attached groups are adjacent: ortho-dibromobenzene.
[Middle English, from Old French, from Latin, from Greek, from orthos, straight, correct, right.]ortho- or before a vowel orth-combining form1. straight or upright: orthotropous. 2. perpendicular or at right angles: orthoclastic. 3. correct or right: orthodontics; orthodox; orthography; orthoptics. 4. (Chemistry) (often in italics) denoting an organic compound containing a benzene ring with substituents attached to adjacent carbon atoms (the 1,2- positions): orthodinitrobenzene. Abbreviation: o- Compare meta-4 Compare para-165. (Chemistry) denoting an oxyacid regarded as the highest hydrated form of the anhydride or a salt of such an acid: orthophosphoric acid. See meta-66. (Chemistry) denoting a diatomic substance in which the spins of the two atoms are parallel: orthohydrogen. See para-18[from Greek orthos straight, right, upright]or•tho (ˈɔr θoʊ)
adj. pertaining to or occupying two adjacent positions in the benzene ring. Compare meta, para 2. [1875–80; independent use of ortho-] ortho- 1. a combining form meaning “straight,” “upright,” “right,” “correct”: orthodontics; orthopedic. 2. a. a combining form used in the name of the most hydrated acid in a given series: orthoboric acid. Compare meta- (def. 2a), pyro- (def. 2a). b. a combining form used in the names of benzene derivatives in which the substituting group occupies the ortho position in the benzene ring. Also, esp. before a vowel, orth-. [< Greek, comb. form of orthós straight, upright, correct] ortho-enUK
ortho- , orth-1. Prefix denoting straight, normal, in proper order. 2. In chemistry, italicized prefix denoting that a compound has two substitutions on adjacent carbon atoms in a benzene ring. For terms beginning ortho- or o-, see the specific name. 3. The most hydrated of a series of oxoacids, for example, orthophosphoric acid, H3PO4. [G. orthos, correct] ortho- , orth-1. Combining forms meaning straight, normal, in proper order. 2. chemistry Italicized prefix denoting that a compound has two substitutions on adjacent carbon atoms in a benzene ring. For terms beginning ortho- or o-, see the specific name. ortho- Combining form denoting straight, upright, corrective or normal.ortho- prefix denoting straight, upright, correct.ortho- , orth-Combining forms meaning straight, normal, in proper order. ORTHO-
| Acronym | Definition |
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| ORTHO-➣Adjoining (Prefix) | | ORTHO-➣Straight, Normal (Prefix) |
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