menaquinone en · NOUN
Pronunciation
- /ˌmɛn.əˈkwɪˌnoʊn/ (General-American)
- /ˌmɛn.əˈkwɪn.əʊn/ (Received-Pronunciation)
Etymology
Etymology tree Proto-Indo-European *médʰu Proto-Hellenic *métʰu Ancient Greek μέθυ (méthu) Proto-Indo-European *swel-der.? Ancient Greek ῡ̔́λη (hū́lē)der. German -yl German Methylbor. English me(thyl) English na(phtho)quinone English menaquinone From me(thyl) + na(phtho)quinone.
Meanings
- 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.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| menaquinones | Number=Plur | lexicographic |