As usually taken, of course, the proportion of the alkaloid is much less.
Mr. alkaloid had come from Ryde to London to get his hair singed.
Tea and coffee both contain the alkaloid caffeine, whilst cocoa contains theobromine.
Within the room Mr. alkaloid was photographing the dead poodle.
Containing but traces of the alkaloid they are not bitter, and possess a pleasant, but very volatile aroma.
It was but for a moment, for the action of the alkaloid is rapid.
From it an alkaloid is extracted that is called by Manila chemists, ditaïne.
Picrotoxin (C30H24O13) is not an alkaloid as may be seen from its formula.
Of all salts this is most suitable for subcutaneous injection; it is the form in which the alkaloid exists in opium.
The oil of hyoscyamus is poisonous, and contains the alkaloid.
alkaloid al·ka·loid (āl'kə-loid')
Any of various organic compounds, such as nicotine and morphine, that have basic chemical properties and that usually contain at least one nitrogen atom in a heterocyclic ring.
Any of a large class of naturally occurring, complex organic compounds that contain nitrogen and have physiological effects on animals, including humans. Most alkaloids occur in plants, although some are produced by fungi and animals. Alkaloids are bases and usually form colorless crystalline solids with a bitter taste. They have a wide range of effects and are used as medicines and poisons. Morphine, quinine, strychnine, codeine, caffeine, cocaine, and nicotine are all alkaloids.