petasecond

Definition

An SI unit of time equal to 10¹⁵ seconds. Symbol: Ps. (= 31 709 800 years)

Etymology

From peta- + second.

Example Sentences

• "Holonyms: 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 < terasecond < mega-annum, megayear"