• synonyms


[dahy-az-oh-meth-eyn, -ey-zoh-]
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noun Chemistry.
  1. a yellow, odorless, toxic, explosive gas, CH2N2, used chiefly as a methylating agent and in organic synthesis.
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Origin of diazomethane

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for diazomethane

Historical Examples

  • Diazomethane is a yellow inodorous gas, very poisonous and corrosive.

    Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4


British Dictionary definitions for diazomethane


  1. a yellow odourless explosive gas, used as a methylating agent. Formula: CH 2 :N:N
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012