per annum [per an-uh m] Word Originadverb
- by the year; yearly.
Origin of per annum Borrowed into English from Latin around 1595–1605 Can be confusedper annum per capita per diem Related Words for per annum regularly, annual, annually, yearlong, perennial British Dictionary definitions for per annum per annum adverb
- every year or by the year
Word Origin and History for per annum