spheroidal🔊adj1Like a spheroid; roughly spherical.The buccal mass in milacids is spheroidal, and contains an oxygnathic jaw.2004, G. M. Barker, Natural Enemies of Terrestrial Molluscs, page 299:Derived termsdwarf spheroidal galaxy, hemispheroidal, hyperspheroidal, nonspheroidal, quasispheroidal, semispheroidal, spheroidally, subspheroidal