What does "annum" mean?

Synonym of year.; A one-year period, particularly (finance) a fiscal year or (sciences) a Julian year of exactly 365.25 days.

Annum

Common synonyms include: abundant year, academic year, bissextile year, calendar month, calendar year, century.

noun

noun ·2 syllables ·Rare ·Advanced level

Noun

1
Synonym of year.; A one-year period, particularly (finance) a fiscal year or (sciences) a Julian year of exactly 365.25 days. uncommon
2
(Latin) year wordnet
3
Synonym of year.; A "year" determined by the revolution of an extraterrestrial planet. uncommon

From Latin per annum (“yearly”), from annus (“year”).