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Any of various organic compounds that are usually basic and contain at least one nitrogen atom in a heterocyclic ring, occurring chiefly in flowering plants. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.
al′ka·loi′dal (-loid′l) adj.
relating to alkaloids
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|Adj.||1.||alkaloidal - pertaining to or consisting of alkaloids|