quectosecond/ˈkwɛk.toʊˌsɛk.ənd/EtymologyFrom quecto- + second.nounAn SI unit of time equal to 10⁻³⁰ seconds. Symbol: qs“Holonyms: rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < week < megasecond < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond <”