Holonyms: mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond
Source: wiktionary
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OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
1 translations across 1 languages.
3 total sentences available.
Holonyms: mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond
Source: wiktionary
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
Source: wiktionary
The solar system has been in existence for about 150000 teraseconds and may well remain in existence without major change for 500000 additional teraseconds.
Source: wiktionary
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.