agnatha/ˈæɡ.nə.θə/agnatha means an agnathan. Lexicurio rates it Sui generis — a strength score of 85 out of 100.agnatha is pronounced /ˈæɡ.nə.θə/.EtymologyFrom Agnatha, from Ancient Greek ἀ- (a-, “without”) + γνάθος (gnáthos, “jaw”).nounAn agnathan.