eu·tha·na·sia \ˌyüthəˈnāzh(ē)ə\noun (-s) Etymology: Greek, easy death, from eu- + -thanasia (from thanatos death) — more at thanat- 1.: an easy death or means of inducing one 2.: the act or practice of painlessly putting to death persons suffering from incurable conditions or diseases • eu·tha·na·sic\|yüthə|nāzik\adjective