• Webster's Revised Unabridged Dictionary
    • n Sinapoline (Chem) A nitrogenous base, CO.(NH.C3H5)2, related to urea, extracted from mustard oil, and also produced artifically, as a white crystalline substance; -- called also diallyl urea.
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Century Dictionary and Cyclopedia
    • n sinapoline A colorless compound, CH2:CH.CH2NHCONHCH2CH:CH2, prepared by the action of lead hydroxid on allyl mustard-oil. It crystallizes in plates, melts at 100° C., and is volatile with steam. Also called ab- or symmetrical diallyl carbamide.
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Webster's Revised Unabridged Dictionary
Sinapis, + L. oleum, oil