Entry 2 senses Webster, 1913 Heliconian · Hel·i·co·ni·an · IPA /ˌhɛlɪˈkoʊ.ni.ən/ 01 a. Of or pertaining to Helicon. 1. Of or pertaining to Helicon. 2. Like or pertaining to the butterflies of the genus Heliconius.(Zool.)