Entry 1 sense Webster, 1913 Amioidei · Am·i·oi·de·i · IPA 01 n. pl. An order of ganoid fishes of which Amia is the type. See Bowfin and Ganoidei. 1. An order of ganoid fishes of which Amia is the type. See Bowfin and Ganoidei.(Zool.) See: Bowfin, Ganoidei