phytomenadione

P3H4Y4T1O1M3E1N1A1D2I1O1N1E1
US/ˌfaɪ.toʊˌmɛn.əˈdaɪˌoʊn/

noun

A yellow oily naphthoquinone C₃₁H₄₆O₂ that is obtained especially from alfalfa, cabbage, spinach, and other leafy green vegetables or made synthetically and that has a fast, potent, and prolonged biological effect. It is essential for the blood-clotting process, effective orally, and useful especially in treating hypoprothrombinemia induced by anticoagulant drugs (trademark Mephyton).

Similar
phylloquinonevitamin K1
OriginEnglish menadione ← German Keton ← Latin di- →
Scrabble 25
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Meanings

nounphytomenadione (uncountable)

alternative phytonadione

  1. uncountablebiochemistryA yellow oily naphthoquinone C₃₁H₄₆O₂ that is obtained especially from alfalfa, cabbage, spinach, and other leafy green vegetables or made synthetically and that has a fast, potent, and prolonged biological effect. It is essential for the blood-clotting process, effective orally, and useful especially in treating hypoprothrombinemia induced by anticoagulant drugs (trademark Mephyton).

    Synonyms: phylloquinone, vitamin K1

Synonyms & antonyms

nounA yellow oily naphthoquinone C₃₁H₄₆O₂ that is obtained especially from alfalfa, cabbage, spinach, and other leafy green vegetables or made synthetically and that has a fast, potent, and prolonged biological effect. It is essential for the blood-clotting process, effective orally, and useful especially in treating hypoprothrombinemia induced by anticoagulant drugs (trademark Mephyton).

Similar
phylloquinonevitamin K1
Also see
phylloquinone

Origin

  1. Englishphyt(ene)
  2. Proto-Indo-European*médʰu
  3. Proto-Hellenic*métʰu
  4. Ancient Greekμέθυ (méthu)
  5. Proto-Indo-European*swel-der.?
  6. Ancient Greekῡ̔́λη (hū́lē)
  7. GermanMethy
  8. Englishme(thyl)
  9. Akkadiannapṭumbor.?
  10. Old Persian*naftah
  11. Ancient Greekνάφθα (náphtha)
  12. Latinnaphtha
  13. Englishnaphth(a)
  14. Englishna(phthalene)
  15. Proto-Indo-European*dwóh₁
  16. Proto-Indo-European*dwi-
  17. Proto-Hellenic*dwi-
  18. Ancient Greekδῐ- (dĭ-)
  19. Latindi-
  20. Englishdi-
  21. GermanKeton
  22. Englishketone
  23. Englishdione
  24. Englishmenadione
  25. Englishphytomenadione

From phyt(ene) + -o- + menadione.

Full word history & related roots →
Cite this entry
APA

phytomenadione. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/phytomenadione

MLA

“phytomenadione.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/phytomenadione. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “phytomenadione,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/phytomenadione.

Source: phytomenadione on Wiktionary, CC BY-SA 4.0.