Standard Lemma guide

annum

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • CMU ARPABET: AE1 N AH0 M Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Synonym of year.

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

Definition source: English Wiktionary via Wiktextract

Usage: uncommon

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Synonym of year.

A "year" determined by the revolution of an extraterrestrial planet.

Definition source: English Wiktionary via Wiktextract

Usage: uncommon

Topics: astronomy, literature, media, natural-sciences, publishing, science-fiction

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(Latin) year

Definition source: Princeton WordNet 3.0

Examples

  • per annum

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: year, twelvemonth, yr

History

Etymology

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

Real reading context

annum in complete knowledge articles