per-
Prefix
  1. (non-productive) In verbs: denoting the sense "through", as in perforate.
  2. (non-productive) In verbs: denoting the sense "thoroughly", as in perfect.
  3. (non-productive) In verbs: denoting the sense "to destruction", as in pervert.
  4. (non-productive) In adjectives and adverbs: denoting the sense "extremely", as in perfervid.
  5. (chemistry) Forming nouns and adjectives denoting the maximum proportion of one element in a compound, as in peroxide.
  6. (chemistry) Added to the name of an element in a polyatomic ion to denote the number of atoms of that element (usually four).
Related terms Prefix
  1. (non-productive) Denoting the sense "by" or "per", as in perchance or perhaps.



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