pyrocolln.

Brit.

/ˈpʌɪrə(ʊ)kɒl/, U.S.

/ˈpaɪroʊˌkɔl/,

/ˈpaɪroʊˌkɑl/

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

Etymology: < German Pyrocoll (H. Weidel & G. L. Ciamician 1880, in Sitzungsberichte der Kaiserlichen Akad. der Wissensch. 81 514), < pyro- pyro- comb. form + ancient Greek κόλλα glue (see colloid adj.). Compare earlier glycocoll n.

Chemistry.

A yellow, crystalline, heterocyclic compound formed when gelatin is distilled.Pyrocoll has a planar molecule containing three fused rings. Formula: C₁₀H₆N₂O₂.

ΚΠ

1881 Jrnl. Chem. Soc. 40 295 The authors propose to call it pyrocoll, because of its mode of formation from gelatin.

1916 Jrnl. Amer. Chem. Soc. 38 1065 The nitration of pyrocoll..led to the formation of a dinitropyrocoll of unknown constitution.

1977 Chem. Rev. 77 303/2 Pyrocoll has long been known to occur in [tobacco] leaf and smoke.

2003 Jrnl. Antibiotics 56 639 Pyrocoll is known as a synthetic compound, but until now had not been isolated as a natural product from a microorganism.

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

单词	pyrocoll
释义	pyrocolln. Brit. /ˈpʌɪrə(ʊ)kɒl/, U.S. /ˈpaɪroʊˌkɔl/, /ˈpaɪroʊˌkɑl/ Origin: A borrowing from German. Etymon: German Pyrocoll. Etymology: < German Pyrocoll (H. Weidel & G. L. Ciamician 1880, in Sitzungsberichte der Kaiserlichen Akad. der Wissensch. 81 514), < pyro- pyro- comb. form + ancient Greek κόλλα glue (see colloid adj.). Compare earlier glycocoll n. Chemistry. A yellow, crystalline, heterocyclic compound formed when gelatin is distilled.Pyrocoll has a planar molecule containing three fused rings. Formula: C₁₀H₆N₂O₂. ΚΠ 1881 Jrnl. Chem. Soc. 40 295 The authors propose to call it pyrocoll, because of its mode of formation from gelatin. 1916 Jrnl. Amer. Chem. Soc. 38 1065 The nitration of pyrocoll..led to the formation of a dinitropyrocoll of unknown constitution. 1977 Chem. Rev. 77 303/2 Pyrocoll has long been known to occur in [tobacco] leaf and smoke. 2003 Jrnl. Antibiotics 56 639 Pyrocoll is known as a synthetic compound, but until now had not been isolated as a natural product from a microorganism. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1881
随便看	bill-maker bill-patched bill-poster bill-posting bill-snapping bill-sticker bill-sticking bill-trade bill-twisted billable billabler billablest billabong billabongs billage billard billbergia billboard billboard pass billboarded billboarding billboards billbook billbooks billbroker