‖ ectasiaPathol.|ɛkˈteɪzɪə| [mod.L., as if a. Gr. *ἐκτασία, f. as next, on the analogy of ἀναισθησία, etc.] A dilatation. A synonym of aneurism. (Syd. Soc.Lex.) 1876tr.Wagner's Gen.Pathol. 599 Bronchial ectasias with intact or ulcerated mucous membrane.