We use cookies to enhance your experience on our website. By continuing to use our website, you are agreeing to our use of cookies. You can change your cookie settings at any time. Find out more

Subscriber login

Library card login

Other

X Close menu

Dictionary Language resources

physostigmine

Pronunciation: /ˌfʌɪsəʊˈstɪgmiːn/

Definition of physostigmine

noun

[mass noun] Chemistry

a compound which is the active ingredient of the Calabar bean and is used medicinally in eye drops on account of its anticholinesterase activity.
- A tricyclic alkaloid; chemical formula: C₁₅H₂₁N₃O₂