protagonn.

Brit.

/ˈprəʊtəɡ(ə)n/, U.S.

/ˈproʊdəˌɡɑn/

Origin: A borrowing from German. Etymon: German Protagon.

Etymology: < German Protagon (O. Liebreich 1865, in Ann. der Chem. u. Pharm. 134 30) < ancient Greek πρωτο- proto- comb. form + ἄγον , neuter present participle of ἄγειν to lead (see agon n.).The alleged Greek etymon *πρωταγον cited by Liebreich does not appear to be attested.

Biochemistry. Now historical.

A fatty substance, occurring chiefly in the white matter of the brain, consisting of a mixture of cerebrosides and sphingomyelin (originally thought to be a single substance).

ΚΠ

1867 Proc. Royal Soc. 16 466 The protagon of Liebreich, and the neurine recently identified by Wurtz.., have this characteristic in a certain degree.

1904 E. B. Titchener tr. W. M. Wundt Princ. Physiol. Psychol. I. 54 Protagon, a highly complex body, to which Liebreich has assigned the empirical formula C₁₁₆H₂₄₁N₄PO₂₂.

1951 H. J. Deuel Lipids I. v. 477 This so-called protagon is a snow-white mass which amounts to about 3–4% of the fresh brain.

1983 Notes & Rec. Royal Soc. 38 136 In 1907..she showed that ‘Protagon’, a substance that was meant to represent a basic component of brain cells, was only an unresolved mixture of other biochemicals.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	protagon
释义	protagonn. Brit. /ˈprəʊtəɡ(ə)n/, U.S. /ˈproʊdəˌɡɑn/ Origin: A borrowing from German. Etymon: German Protagon. Etymology: < German Protagon (O. Liebreich 1865, in Ann. der Chem. u. Pharm. 134 30) < ancient Greek πρωτο- proto- comb. form + ἄγον , neuter present participle of ἄγειν to lead (see agon n.).The alleged Greek etymon πρωταγον cited by Liebreich does not appear to be attested. Biochemistry. Now historical. A fatty substance, occurring chiefly in the white matter of the brain, consisting of a mixture of cerebrosides and sphingomyelin (originally thought to be a single substance). ΚΠ 1867 Proc. Royal Soc.* 16 466 The protagon of Liebreich, and the neurine recently identified by Wurtz.., have this characteristic in a certain degree. 1904 E. B. Titchener tr. W. M. Wundt Princ. Physiol. Psychol. I. 54 Protagon, a highly complex body, to which Liebreich has assigned the empirical formula C₁₁₆H₂₄₁N₄PO₂₂. 1951 H. J. Deuel Lipids I. v. 477 This so-called protagon is a snow-white mass which amounts to about 3–4% of the fresh brain. 1983 Notes & Rec. Royal Soc. 38 136 In 1907..she showed that ‘Protagon’, a substance that was meant to represent a basic component of brain cells, was only an unresolved mixture of other biochemicals. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1867
随便看	bran-stuffed bran-tea bran-tub bran-water branbath branbiscuit branboil branbread brancake brancard brancards branch branch bank branch herring branch house branch librarian branch library branch line branch lines branch of activity branch of industry branch of study branch of the legislature branch of the prerogative branch of the revenue