Word.ws English Dictionary

methionine

/mɪˈθʌɪəniːn/US/mɛˈθaɪəˌniːn/

methionine noun: a sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.

methionine: a sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms
Image: Innerstream, Public domain, via Wikimedia Commons

Noun

methionine (countable and uncountable, plural methionines)

  1. A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
    1. The L-form thereof, a lipotropic molecule widely occurring in living organisms and found in most protein; in humans it is an essential amino acid.
      • The purpose was to make soya beans more healthy for those for whom they are a staple food by correcting soya beans' natural deficiency in a chemical called methionine.1999, Matt Ridley, Genome, Harper Perennial, published 2004, page 253

methionine meaning in Tamil, Arabic, Indonesian and Persian

methionine in Tamil

மெத்தியோனைன்

methionine in Arabic

amino acid
مِيثِيُونِين miṯiyunīn

methionine in Indonesian

amino acid
metionina

methionine in Persian

amino acid
متیونین metiyonin

Forms of methionine

pluralmethionines

Origin of methionine

From methyl + thio- + -n- + -ine.

Words formed from methionine

Questions about methionine

What does methionine mean?
Methionine means a sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms.
What is methionine in Tamil?
Methionine in Tamil is மெத்தியோனைன். See Methionine meaning in Tamil.
What part of speech is methionine?
Methionine is a noun.
How do you pronounce methionine?
Methionine is pronounced /mɪˈθʌɪəniːn/ (UK).
What is the plural of methionine?
The plural of methionine is methionines.

Words near methionine in the dictionary

  1. methiodides
  2. methional
  3. methionate
  4. methionates
  5. methionic acid
  6. methionine
  7. methioninemia
  8. methionines
  9. methioninol
  10. methioninyl
  11. methionyl

Source and license

Adapted from Wiktionary: methionine (page history and authors); methionine (Tamil Wiktionary) (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)-Vealhurl-methionine.wav.

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