menaquinone
/ˌmɛn.əˈkwɪˌnoʊn/
Word Rarity
Very rare
Frequency: Zipf frequency 1.16 in modern English
22
Scrabble Score
11
Letters
1
Syllables
8
Unique Chars
Meaning
noun
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.
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.
Regional Pronunciation
- American English: /ˌmɛn.əˈkwɪˌnoʊn/
- British English: /ˌmɛn.əˈkwɪn.əʊn/