gaˈnȯidēˌī, gəˈ- noun plural
Usage: capitalized
Etymology: New Latin, from gan- + -oidei
in some classifications : a subclass or other division of Teleostomi containing numerous extinct fishes and the living sturgeons, paddlefishes, gars (order Ginglymodi), and bowfin and having at least in the living forms a conus arteriosus, a spiral valve in the intestine, and an optic chiasma