alkaloid

play
noun al·ka·loid \ ˈal-kə-ˌlȯid \

Definition of alkaloid

:any of numerous usually colorless, complex, and bitter organic bases (such as morphine or caffeine) containing nitrogen and usually oxygen that occur especially in seed plants and are typically physiologically active

alkaloidal

play \ˌal-kə-ˈlȯi-dᵊl\ adjective

Recent Examples of alkaloid from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'alkaloid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of alkaloid

1820


Medical Dictionary

alkaloid

play
noun al·ka·loid \ ˈal-kə-ˌlȯid \

medical Definition of alkaloid

:any of numerous usually colorless, complex, and bitter organic bases (as morphine or caffeine) containing nitrogen and usually oxygen that occur especially in seed plants and are typically physiologically active

alkaloidal

play \ˌal-kə-ˈlȯid-ᵊl\ adjective


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