adverb
per annum
per annum (not comparable)
Classical[ˈpɛr ˈan.nũː]Ecclesiastical[ˈpɛr ˈan.num]
Meaning
- not comparableUsed other than figuratively or idiomatically: see per, annum; throughout the year
Tempera cum causis Latium digesta per annum lapsaque sub terras ortaque signa canam. The order of the calendar throughout the Latin year, its causes, and the starry signs that set beneath the earth and rise again, of these I'll sing. libera currebant et inobservata per annum
The stars ran their courses free and unmarked throughout the year ; yet everybody agreed that they were gods.1st century BC or AD, Ovid, Fasti, I, 1f. and III, 111f.; ed. and transl.: Ovid's Fasti with an English translation by Sir James George Frazer, 1959, p. 2f. and p. 128f. - not comparableproscribedper annum; per year
Origins
In post-classical Latin (4th or 5th century) in reference to a sum of money due each year. Already in the 3rd century in the sense of "through the year". From the preposition per (“through; during”) + annum, the accusative singular of annus (“year”).