nitrogen tetroxide
noun Chemistry.
a poisonous compound, N2O4, occurring as a colorless, water-soluble solid or liquid, dissociating into NO2: used chiefly as an oxidizer, especially in rocket fuels, as a nitrating agent, and as an intermediate in the manufacture of nitric acid.
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nitrogen tetroxide
noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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