Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

physostigmine

play
noun phy·so·stig·mine \ˌfī-sə-ˈstig-ˌmēn\

Definition of physostigmine

  1. :  a crystalline tasteless alkaloid C15H21N3O2 from the Calabar bean that is used in medicine especially in the form of its salicylate for its anticholinesterase activity



Origin of physostigmine

International Scientific Vocabulary, from New Latin Physostigma, genus of vines that bear the Calabar bean


First Known Use: 1864


Medical Dictionary

physostigmine

play
noun phy·so·stig·mine \ˌfī-sə-ˈstig-ˌmēn\

Medical Definition of physostigmine

  1. :  a tasteless crystalline alkaloid that is an anticholinesterase obtained from the Calabar bean and is used parenterally in the form of its salicylate C15H21N3O2·C7H6O3 especially to reverse the toxic effects of an anticholinergic agent (as atropine) and topically in the form of its sulfate (C15H21N3O2)2·H2SO3 as a miotic in the treatment of glaucoma—called also




Learn More about physostigmine

  1. Medical Dictionary: Definition of "physostigmine"


Seen and Heard

What made you want to look up physostigmine? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

immature or lacking adult sophistication

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

angry oily prompt maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ