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单词 ptomaine
释义

WordReference Random House Learner's Dictionary of American English © 2024
pto•maine /ˈtoʊmeɪn, toʊˈmeɪn/USA pronunciation   n. [uncountable]
  1. Microbiologyany of a class of foul-smelling substances produced by bacteria during the rotting of animal or plant protein.

WordReference Random House Unabridged Dictionary of American English © 2024
pto•maine  (tō′mān, tō mān′),USA pronunciation n. 
  1. Microbiologyany of a class of foul-smelling nitrogenous substances produced by bacteria during putrefaction of animal or plant protein: formerly thought to be toxic.
  • Greek ptôma corpse + Italian -ina -ine2
  • Italian ptomaina
  • 1875–80
pto•main′ic, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
ptomaine, ptomain /ˈtəʊmeɪn/ n
  1. any of a group of amines, such as cadaverine or putrescine, formed by decaying organic matter
Etymology: 19th Century: from Italian ptomaina, from Greek ptoma corpse, from piptein to fall
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更新时间：2024/11/11 1:10:00