mega-annum
noun/ˌmɛɡəˈænəm/
Etymology From mega- + annum.
1
Synonym of megayear: a period of 1 million years.
- Holonyms: petasecond < giga-annum, gigayear < exasecond
- Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond
- Related terms
- MYA, Mya, mya