terasecond

noun

1. An SI unit of time equal to 10¹² seconds. Symbol: Ts. (= 31709.8 years)

   “Holonyms: mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond”

   “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”

   “The solar system has been in existence for about 150000 teraseconds and may well remain in existence without major change for 500000 additional teraseconds.”