hyoscyamine

noun

hy·​o·​scy·​a·​mine ˌhī-ə-ˈsī-ə-ˌmēn How to pronounce hyoscyamine (audio)
: a poisonous crystalline alkaloid C17H23NO3 of which atropine is a racemic mixture
especially : its levorotatory form found especially in the plants belladonna and henbane and used similarly to atropine

Example Sentences

Recent Examples on the Web In addition to the hyoscyamine, other medications used include: atropine eyedrops under the tongue; the antidepressant amitriptyline; and glycopyrrolate. Dr. Keith Roach, oregonlive, 3 Dec. 2021 Indeed, while solitarious locusts avoid eating toxic plants, the gregarious locusts are actually attracted to the odor of hyoscyamine, a toxic alkaloid found in local plants. Matt Simon, Wired, 5 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hyoscyamine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

German Hyoscyamin, from New Latin Hyoscyamus, genus of herbs, from Latin, henbane, from Greek hyoskyamos, literally, swine's bean, from hyos (genitive of hys swine) + kyamos bean — more at sow

First Known Use

1858, in the meaning defined above

Time Traveler
The first known use of hyoscyamine was in 1858

Dictionary Entries Near hyoscyamine

Cite this Entry

“Hyoscyamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyoscyamine. Accessed 9 Dec. 2022.

Medical Definition

hyoscyamine

noun
hyo·​scy·​a·​mine ˌhī-ə-ˈsī-ə-mēn How to pronounce hyoscyamine (audio)
: a poisonous crystalline alkaloid C17H23NO3 of which atropine is a racemic mixture
especially : its levorotatory form found especially in the plants belladonna and henbane and used similarly to atropine

More from Merriam-Webster on hyoscyamine

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
Spell It

Hear a word and type it out. How many can you get right?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ