annum

A1N1N1U1M3
/ˈæn.əm/

noun

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

OriginLatin per annum →
Less commonScrabble 7
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Meanings

nounannum (plural annums)

plural annums · alternative a · alternative ann.

  1. Synonym of year.
    1. uncommonA one-year period, particularly (finance) a fiscal year or (sciences) a Julian year of exactly 365.25 days.
    2. uncommonastronomyA "year" determined by the revolution of an extraterrestrial planet.

Synonyms & antonyms

Also see
fiscal yearyear

Origin

  1. Latinper annum“yearly”
  2. Englishannum

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

More words from Latin

Full word history & related roots →

Rhymes & wordplay

Anagrams

Numanunmannanmu
Cite this entry
APA

annum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/annum

MLA

“annum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/annum. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “annum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/annum.

Source: annum on Wiktionary, CC BY-SA 4.0.