Meaning of per- | Babel Free

Definitions

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

Equivalents

CEFR level