ixia Syllabification: (ix·i·a)Pronunciation: /ˈiksēə/Definition of ixia noun a South African plant of the iris family that bears showy six-petaled starlike flowers on tall wiry stems and has sword-shaped leaves. Genus Ixia, family Iridaceae: and many cultivars Origin:modern Latin, from Latin, denoting a kind of thistle, from Greekixia in other Oxford dictionaries Definition of ixia in the British & World English dictionary