US:USA pronunciation: respellingUSA pronunciation: respelling(as′i tō nītril, -trēl, ə sē′tō-)

WordReference Random House Unabridged Dictionary of American English © 2020
ac•e•to•ni•trile  (as′i tō nītril, -trēl, ə sē′tō-),USA pronunciation n. [Chem.]
  1. Chemistrya colorless, poisonous, water-soluble liquid, C2H3N, having an etherlike odor: used chiefly in organic synthesis and as a solvent. Also called  methyl cyanide. 
  • aceto- + nitrile 1865–70

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