isa·go·ge \ˈīsəˌgōjē, ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷\noun (-s) Etymology: Latin, from Greek eisagōgē, from eisagein to introduce, from eis into + agein to lead; akin to Greek en in — more at in, agent : a scholarly introduction to a branch of study or research • isa·gog·ic\| ̷ ̷ ̷ ̷|gäjik\orisa·gog·i·cal\-jə̇kəl\adjective