alkaloid in English
- alkaloid⇄adj. alkaloidal.
- alkaloid⇄alkaloid, noun, adjective.
- alkaloid⇄noun any one of a large group of alkaline substances containing nitrogen and found in or obtained from many plants. Atropine, quinine, nicotine, morphine, caffeine, strychnine, and cocaine are alkaloids. Most alkaloids are colorless, crystalline, have a