Megayear

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A million years: a thousand thousand years.

    "Holonyms: petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond"

Synonyms

All synonyms
;mega-annummillionenniummul:mamymyr

Example

More examples

"Holonyms: petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond"

Etymology

From mega- + year.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.