decisecond

From deci- + second.

• (UK) IPA^(key): /ˈdɛsɪˌsɛkənd/

decisecond (plural deciseconds)

2. (metrology) An SI unit of time equal to 10⁻¹ seconds. Symbol: ds

   Alternative form: ds (symbol)

   Holonyms: 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 < attosecond < femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond

   • 2025 October 7, baldigaming285, somesillysprunker, “can we all laugh at this guy”, in Reddit‎^[1], archived from the original on 17 February 2026:

     sprunker: "ok ill delay the update by 67 years, 67 months, 67 days, 67 hours, 67 seconds, 67 deciseconds, 67 centiseconds, 67 milliseconds, 67 microseconds, 67 nanoseconds, 67 picoseconds, 67 femtoseconds, 67 attoseconds, 67 zeptoseconds, 67 yoctoseconds, 67 rontoseconds, 67 quectoseconds, and 67... plank ^[sic] time????".

• The centisecond, decisecond, decasecond, and hectosecond are almost never used in science, and their names are rarely found outside dictionaries and word lists.