from The Century Dictionary.

  • noun An alkaloid obtained from Duboisiamyoporoides, a shrub or small tree which is a native of Australia.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Med.) An alkaloid obtained from the leaves of an Australian tree (Duboisia myoporoides), and regarded as identical with hyoscyamine. It produces dilation of the pupil of the eye.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun archaic hyoscyamine


from Wiktionary, Creative Commons Attribution/Share-Alike License

From the name of a tree, Duboisia myoporoides, from whose leaves it can be obtained, and the suffix -ine.


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  • According to the early researches we could not discover any of these relationships which only become evident when we come to study the new discoveries which have been made in connection with the tropines, to which class belong both duboisine and hyoscyamine, which, although differing from atropine, are equally mydriatic in their action.

    Scientific American Supplement, No. 324, March 18, 1882 Various


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