alkaloid
/al-kuh-loid/US // ˈæl kəˌlɔɪd //UK // (ˈælkəˌlɔɪd) //
生物碱,生物碱类,物碱,物质
Definitions
n.名词 noun
- 1
- : any of a large class of organic, nitrogen-containing ring compounds of vegetable origin and sometimes synthesized, some of which are liquid but most of which are solid, that have a bitter taste, that are usually water-insoluble and alcohol-soluble, that combine with acids without the loss of a water molecule to form water-soluble hydrochlorides, hydrobromides, or the like, and that usually exhibit pharmacological action, as nicotine, morphine, or quinine.
adj.形容词 adjective
- 1
- : resembling an alkali; alkaline.
Examples
An alkaloid discovered by Brandes in atropa belladonna or deadly nightshade.
Alkaloid, al′ka-loid, n. a vegetable principle possessing in some degree alkaline properties.
Apomorphia, a-po-morf′i-a, n. an alkaloid prepared from morphia by heating hydrochloric acid—a rapid and powerful emetic.
Alkaloid from Aconite, prepared according to process of Duquesnel.
It is the alkaloid of aconite, and generally fatal in its results.
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