petasecond

名词 n.
中文释义

英文释义

名词 n.
  1. An SI unit of time equal to 10¹⁵ seconds. Symbol: Ps. (= 31 709 800 years)
    — Holonyms: giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond

词形变化

petaseconds plural

词源

Etymology tree
English peta-
English second
English petasecond
From peta- + second.
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