attosecond

Definition

An SI unit of time equal to 10⁻¹⁸ seconds. Symbol: as

Etymology

From atto- + second.

Example Sentences

• "Holonyms: 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 < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond"
• "Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond"
• "I can think at the speed of light, I can perceive events that last for less than an attosecond, I can run faster than time. What do I see when I run across the country, Superman? I see everything. And everyone."