Cyanate \Cy"a*nate\ (s?"?-n?t), n. [Cf. F. cuanate. See Cyanic.]

(Chem.) A salt of cyanic acid.

Ammonium cyanate (Chem.), a remarkable white crystalline substance, NH4.O.CN, which passes, on standing, to the organic compound, urea, CO.(NH2)2.

Source: Webster's Revised Unabridged Dictionary (1913)