ˌərgəˈtäkˌsēn, -_sə̇n noun
( -s )
Etymology: ergo (II) + tox- + -ine
1. : a crystalline pharmacologically active alkaloid C 35 H 39 N 5 O 5 from ergot that is stereoisomeric with ergotinine
2. : a mixture of isomorphous pharmacologically active alkaloids from ergot — called also ergotoxine group ; see ergocornine , ergocristine