per annum

per annum [per an-uh m] Word Origin See more synonyms for per annum on Thesaurus.com adverb

1. 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

1. every year or by the year

Word Origin and History for per annum

Latin, literally “by the year,” from per (see per) + annum, accusative singular of annus “year” (see annual).