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/ˌmɛn.əˈkwɪn.əʊn/ · noun
(biochemistry, pharmacology) A pale yellow crystalline naphthoquinone C₄₁H₅₆O₂ that is obtained especially from putrefied fish meal and produced by bacteria in the large intestine and essential for the blood-clotting process. It is much more unsaturated than vitamin K₁ and slightly less active biologically, and is an isoprenoid derivative of menadione..
Use menaquinone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Menaquinone means (biochemistry, pharmacology) A pale yellow crystalline naphthoquinone C₄₁H₅₆O₂ that is obtained especially from putrefied fish meal and produced by bacteria in the large intestine and essential for the blood-clotting process. It is much more unsaturated than vitamin K₁ and slightly less active biologically, and is an isoprenoid derivative of menadione..
Common synonyms include vitamin K2.
The opposite depends on the specific sense.
Use menaquinone where its definition matches the intended context.
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