Word.ws English Dictionary

biosignature

biosignature noun: any measurable phenomenon that indicates the presence or probable presence of life.

Noun

biosignature (plural biosignatures)

  1. (especially astrobiology) Any measurable phenomenon that indicates the presence or probable presence of life.
    • The team say dimethyl sulfide and dimethyl disulfide are molecules from the same chemical family, and could be ‘biosignatures’.2025 April 17, Iain Todd, “Astronomers have found the ‘most promising signs yet’ of alien life on a planet beyond our Solar System”, in BBC Sky at Night Magazine

Forms of biosignature

pluralbiosignatures

Origin of biosignature

From bio- + signature.

Questions about biosignature

What does biosignature mean?
Biosignature means any measurable phenomenon that indicates the presence or probable presence of life.
What part of speech is biosignature?
Biosignature is a noun.
What is the plural of biosignature?
The plural of biosignature is biosignatures.

Words near biosignature in the dictionary

  1. biosides
  2. biosign
  3. biosignal
  4. biosignaling
  5. biosignals
  6. biosignature
  7. biosignatures
  8. biosigns
  9. biosilica
  10. biosiliceous
  11. biosilicification

Source and license

Adapted from Wiktionary: biosignature (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.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Wodencafe-biosignature.wav.

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