Home › Words › M › mosasaurmosasaurmosasaur means A large extinct marine reptile in the family †Mosasauridae, dominant marine predator of the Cretaceous. Mosasaurs are considered to belong to Squamata, the same group that includes lizards and snakes.EtymologyFrom scientific Latin Mosasaurus (genus name).nounA large extinct marine reptile in the family †Mosasauridae, dominant marine predator of the Cretaceous. Mosasaurs are considered to belong to Squamata, the same group that includes lizards and snakes.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.plesiosaur 64% match — Any of the order †Plesiosauria of extinct marine reptiles, from the Jurassic and Cretaceous periods. vs mosasaur →plesiosaurid 64% match — Any plesiosaur in the family †Plesiosauridae of extinct marine reptiles. vs mosasaur →pilosaurid 63% match — Any of the family Pliosauridae of extinct marine reptiles. vs mosasaur →saurosphargid 60% match — Any extinct reptile of the family †Saurosphargidae vs mosasaur →ichthyosauromorph 60% match — Any extinct marine reptile of the clade †Ichthyosauromorpha vs mosasaur →mesosaur 60% match — Any of a group of small aquatic reptiles, from the early Permian period, of the order †Mesosauria. vs mosasaur →dolichosaurid 59% match — Any extinct aquatic varanoid lizard of the family †Dolichosauridae vs mosasaur →pliosaur 58% match — Any plesiosaur in the suborder †Pliosauroidea, known from the earliest Jurassic to early Late Cretaceous. vs mosasaur →