rhombiferIchthyol.|ˈrɒmbɪfə(r)| [ad.mod.L. Rhombifera, neut. pl. of rhombiferus, f.rhombus rhombus + -ferus(see -fer).] A ganoid fish, characterized by rhomboidal scales. 1863Dana Man.Geol. 279 Rhombifers, or Ordinary Ganoids.Ibid. 280 The Pycnodonts are Rhombifers.