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单词 formaldehyde
释义

WordReference Random House Learner's Dictionary of American English © 2024
form•al•de•hyde /fɔrˈmældəˌhaɪd, fɚ-/USA pronunciation   n. [uncountable]
  1. Chemistrya toxic gas used chiefly in solution as a disinfectant and as a preservative.

WordReference Random House Unabridged Dictionary of American English © 2024
form•al•de•hyde  (fôr mal′də hīd′, fər-),USA pronunciation n. [Chem.]
  1. Chemistrya colorless, toxic, potentially carcinogenic, water-soluble gas, CH2O, having a suffocating odor, usually derived from methyl alcohol by oxidation: used chiefly in aqueous solution, as a disinfectant and preservative, and in the manufacture of various resins and plastics. Also called methanal. Cf. formalin.
  • 1870–75; form(ic) + aldehyde; modeled on German Formaldehyd

Collins Concise English Dictionary © HarperCollins Publishers::
formaldehyde /fɔːˈmældɪˌhaɪd/ n
  1. a colourless poisonous irritating gas with a pungent characteristic odour, made by the oxidation of methanol and used as formalin and in the manufacture of synthetic resins. Formula: HCHO
    Systematic name: methanal
Etymology: 19th Century: form( ic) + aldehyde; on the model of German Formaldehyd
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更新时间：2025/2/23 6:41:57