Meaning of HYOSCYAMINE
| Pronunciation: | | `hIu'sIu`meen
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 WordNet Dictionary |
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| | Definition: | | [n] a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract |
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| | See Also: | | alkaloid, poison, poisonous substance | |
| Webster's 1913 Dictionary |
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| | Definition: | | \Hy`os*cy"a*mine\, n. [See {Hyoscyamus}.] (Chem.)
An alkaloid found in henbane ({Hyoscyamus niger}), and
regarded as its active principle. It is also found with other
alkaloids in the thorn apple and deadly nightshade. It is
extracted as a white crystalline substance, with a sharp,
offensive taste. Hyoscyamine is isomeric with atropine, is
very poisonous, and is used as a medicine for neuralgia, like
belladonna. Called also {hyoscyamia}, {duboisine}, etc.
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| Biology Dictionary |
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| | Definition: | | A chemical with the formula C17H23O3N which is a white powder at room temperature and which melts at 108.5°C. It comes from plants such as henbane and belladona. Hyoscyamine is used medically as the levorotatory isomer of racemic atropine and as an anticholinergic alkaloid. |
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