Word.ws English Dictionary

zettasecond

zettasecond noun: an SI unit of time equal to 10²¹ seconds. Symbol: Zs. (= trillions of years, a hypothetical time span that is meaningless except in speculative contexts such as theoretical physics, philosophy, religion, and humorous hyperbole).

Noun

zettasecond (plural zettaseconds)

  1. An SI unit of time equal to 10²¹ seconds. Symbol: Zs. (= trillions of years, a hypothetical time span that is meaningless except in speculative contexts such as theoretical physics, philosophy, religion, and humorous hyperbole)
    • Holonyms: 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 <...

Forms of zettasecond

pluralzettaseconds

Origin of zettasecond

From zetta- + second.

Questions about zettasecond

What does zettasecond mean?
Zettasecond means an SI unit of time equal to 10²¹ seconds. Symbol: Zs. (= trillions of years, a hypothetical time span that is meaningless except in speculative contexts such as theoretical physics, philosophy, religion, and humorous hyperbole).
What part of speech is zettasecond?
Zettasecond is a noun.
What is the plural of zettasecond?
The plural of zettasecond is zettaseconds.

Words near zettasecond in the dictionary

  1. zettametres
  2. zettampere
  3. zettamperes
  4. zettaparsec
  5. zettaparsecs
  6. zettasecond
  7. zettaseconds
  8. zettaton
  9. zettatons
  10. Zettel
  11. zettelkasten

Source and license

Adapted from Wiktionary: zettasecond (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “zettasecond.” Word.ws, https://word.ws/zettasecond. Based on Wiktionary, CC BY-SA 4.0.