ethylene oxide

noun Chemistry.

a colorless, odorless, gaseous, toxic, ring compound, C₂H₄O, usually obtained by the oxidation of ethylene: used chiefly in the synthesis of ethylene glycol.

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Origin:
1895–1900

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Ethylene oxide is always a great word to know.

So is melamine. Does it mean:

a white, crystalline, slightly water-soluble solid, C3N3(NH2)3, used chiefly in organic synthesis and in the manufacture of resins

the process or result of a chemical reaction to oxygen, or the deposit that forms on the surface of a metal as it oxidizes

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