menaquinonen.

Brit.

/ˌmɛnəˈkwɪnəʊn/,

/ˌmɛnəkwᵻˈnəʊn/, U.S.

/ˌmɛnəˈkwɪnoʊn/,

/ˌmɛnəkwᵻˈnoʊn/

Origin: Formed within English, by compounding. Etymons: methyl n., naphtha n., naphthoquinone n., quinone n.

Etymology: < me- (in methyl n.) + na- (in naphtha n. or naphthoquinone n.) + quinone n., perhaps after menadione n.

Biochemistry.

Any of a series of menadione derivatives, which are synthesized in the body by (esp. intestinal) bacteria and which are essential for blood-clotting. (In quot. 1942 used for menadione.)

ΚΠ

1942 T. Sollman Man. Pharmacol. (ed. 6) 496 Various other naphthoquinone derivatives have the same action, for instance..‘menadione’, N.N.R. (menaquinone),..which is three or four times more potent than the K vitamin.

1967 Jrnl. Chem. Soc. 100 2100/1 In T[abebuia] avellanedae, menaquinone-1..is probably the origin of two artefacts.

1970 R. W. McGilvery Biochemistry xxvi. 651 (caption) The side chain is removed from most of the ingested compounds by intestinal bacteria; the resultant menadione is absorbed and a new side chain is constructed to create menaquinone.

1988 BioFactors 1 57/1 Menaquinone activity in a detergent-solubilized system utilizing an exogenous peptide substrate.

This is a new entry (OED Third Edition, September 2001; most recently modified version published online March 2022).

单词	menaquinone
释义	menaquinonen. Brit. /ˌmɛnəˈkwɪnəʊn/, /ˌmɛnəkwᵻˈnəʊn/, U.S. /ˌmɛnəˈkwɪnoʊn/, /ˌmɛnəkwᵻˈnoʊn/ Origin: Formed within English, by compounding. Etymons: methyl n., naphtha n., naphthoquinone n., quinone n. Etymology: < me- (in methyl n.) + na- (in naphtha n. or naphthoquinone n.) + quinone n., perhaps after menadione n. Biochemistry. Any of a series of menadione derivatives, which are synthesized in the body by (esp. intestinal) bacteria and which are essential for blood-clotting. (In quot. 1942 used for menadione.) ΚΠ 1942 T. Sollman Man. Pharmacol. (ed. 6) 496 Various other naphthoquinone derivatives have the same action, for instance..‘menadione’, N.N.R. (menaquinone),..which is three or four times more potent than the K vitamin. 1967 Jrnl. Chem. Soc. 100 2100/1 In T[abebuia] avellanedae, menaquinone-1..is probably the origin of two artefacts. 1970 R. W. McGilvery Biochemistry xxvi. 651 (caption) The side chain is removed from most of the ingested compounds by intestinal bacteria; the resultant menadione is absorbed and a new side chain is constructed to create menaquinone. 1988 BioFactors 1 57/1 Menaquinone activity in a detergent-solubilized system utilizing an exogenous peptide substrate. This is a new entry (OED Third Edition, September 2001; most recently modified version published online March 2022). < n.1942
随便看	cedrene cedria cedrin cedrine cedriret cedrium cedron cedula cedulas ceduous cee cee spring ceefax cees cegb ceiba ceibas ceil ceiled ceili ceilidh ceilidhs ceiling ceiling joists ceiling rose