Dictionary entry

Eserine

Webster's Dictionary 1913

Es″er‐ine (?; 104), n. [From native name of the Calabar bean: cf. F. ésérine.] (Chem.) An alkaloid found in the Calabar bean, and the seed of Physostigma venenosum; physostigmine. It is used in ophthalmic surgery for its effect in contracting the pupil.