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isocyanate

[ahy-suh-sahy-uh-neyt]
noun Chemistry.
  1. a salt or ester of isocyanic acid.
  2. any compound containing the univalent group −NCO.
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Origin of isocyanate

First recorded in 1870–75; isocyan(ic acid) + -ate2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018