| Definitions | | per- |
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prefix (infl, en, prefix, cat=prefixes)
- In verbs: denoting the sense "through", as in perforate.
- In verbs: denoting the sense "thoroughly", as in perfect.
- In verbs: denoting the sense "to destruction", as in pervert.
- In adjectives and adverbs: denoting the sense "extremely", as in perfervid.
- (chemistry) Forming nouns and adjectives denoting the maximum proportion of one element in a compound, as in peroxide.Or A prefix added to the name of an element in a polyatomic ion denote the number of that element(usually four).
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