Definition of hyoscyamine in English:


Line breaks: hyos|cya¦mine
Pronunciation: /ˌhʌɪə(ʊ)ˈsʌɪəmiːn


[mass noun] Chemistry
  • A poisonous compound present in henbane, with similar properties to hyoscine.
    • Chemical formula: C17H23NO3
    More example sentences
    • The tropane alkaloids scopolamine and hyoscyamine were extracted and analysed from N. tabacum cultured hairy roots.
    • In all preceding studies, alkaloid production was measured as scopolamine and hyoscyamine only.
    • Scopolamine and hyoscyamine are most concentrated in the seeds and can cause anticholinergic poisoning in exposed persons.


mid 19th century: from modern Latin hyoscyamus (from Greek huoskuamos 'henbane', from hus, huos 'pig' + kuamos 'bean') + -ine4.

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a small amount; a little