An irritating and caustic water-soluble substance, H2NCN or HN=C=NH; often used in referring to calcium c..
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cy·an·a·mide (si-anґə-mīd) 1. carbamic acid nitril, N
C
NH2. 2. HN
CNH, the anhydride of urea. 3. calcium cyanamide.
Medical dictionary. 2011.