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40s

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40s¹

Where it comes from

Abbreviated form of 1940s.

noun '40s · 40's

  1. uncountable The decade of the 1940s.

    Similar: 1940s, forties

  2. uncountable A range of the numbers forty (40) to forty-nine (49). Women in their 40s were counseled to make individual decisions together with their health care provider, but there was no explicit recommendation for them to start until they turned 50.

40s²

noun

  1. plural plural of 40 (“bottle of beer”)

40S³

Where it comes from

Referring to its sedimentation coefficient measured in svedbergs (S).

noun

  1. uncountable The small subunit of the eukaryotic 80S ribosomes.

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Cite this
MLA

"40s." Wiktionary, via Micwyn, micwyn.com/word/40s. Accessed 6 Nov. 2026.

APA

40s. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/40s

Chicago

"40s." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/40s.

BibTeX
@misc{40s_2026,
  title = {40s},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/40s},
  urldate = {2026-11-06}
}