| 单词 | per- |
| 释义 | per- prefix. 1. forming verbs, nouns, and adjectives meaning: a through; all over (perforate; perforation; pervade). b completely; very (perfervid; perturb). c to destruction; to the bad (pervert; perdition). 2. Chem. having the maximum of some element in combination, esp.: a in the names of binary compounds in -ide (peroxide). b in the names of oxides, acids, etc. in -ic (perchloric; permanganic). c in the names of salts of these acids (perchlorate; permanganate). Etymology: L per- (as PER) |
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