Definition of per by GCIDE Dictionary
- Per prep. [L. Cf. Far, For-, Pardon, and cf. Par, prep.] Through; by means of; through the agency of; by; for; for each; as, “per annum; per capita, by heads, or according to individuals; per curiam, by the court; per se, by itself, of itself”. Per is also sometimes used with English words.
Per annum, by the year; in each successive year; annually. -- per cent, Per centum, percent, by the hundred; in the hundred; a proportion multiplied by one hundred; -- used esp. of proportions of ingredients, rate or amount of interest, and the like; most commonly used in the shortened form per cent; as, “5 is ten per cent of 50”. It is commonly symbolized with the per cent sign, “%”. -- Per diem, by the day. [For other phrases from the Latin, see Quotations, Phrases, etc., from Foreign Languages, in the Supplement.]