Standard Lemma guide

millionennium

noun · 1 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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1

noun

Meaning 1

Synonym of mega-annum: a period of time consisting of one million years.

Definition source: English Wiktionary via Wiktextract

Usage: rare

Examples

  • Holonym: eternity
  • Meronyms: annum, biennium, triennium, quadrennium, quinquennium, sexennium, septennium, octennium, novennium, decennium, vicennium, tricennium, centennium, quincentennium, millennium, decamillennium, centimillennium

Meaning relationships

Synonyms: mega-annum

Antonyms: none provided

History

Etymology

Blend of million + millennium.