Meanings
plural mosasaurs
- 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.First known use c. 1840
Mosasaurs could reach lengths of up to 17m and lived mainly in offshore waters of the Late Cretaceous.
2012, Winand Brinkmann, Kenneth De Baets, editors, Paleontological Museum of the University of Zürich: Exhibition Guide, Paleontological Institute and Museum of the University of Zürich, →ISBN, page 701 more example
What I find deeply disturbing, however, is that Mr. Ross could believe that the earth was created 10,000 years ago, but nevertheless write in his dissertation that mosasaurs, or marine reptiles, existed more than 65 million years ago.
2007 February 14, “The Case of the Creationist Geologist (5 Letters)”, in New York Times
Origin
From scientific Latin Mosasaurus (genus name).
Full word history & related roots →Translations
German Mosasaurier
- Mosasaurierextinct marine reptile in family Mosasauridae
Italian mosasauro
- mosasauroextinct marine reptile in family Mosasauridae
Polish mozazaur
- mozazaurextinct marine reptile in family Mosasauridae
Portuguese mosassauro
- mosassauroextinct marine reptile in family Mosasauridae
Russian мозаза́вр
- мозаза́вр (mozazávr)extinct marine reptile in family Mosasauridae
Spanish mosasáurido, mosasaurio
- mosasáuridoextinct marine reptile in family Mosasauridae
- mosasaurioextinct marine reptile in family Mosasauridae
Cite this entry
mosasaur. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/mosasaur
“mosasaur.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mosasaur. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “mosasaur,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/mosasaur.
Source: mosasaur on Wiktionary, CC BY-SA 4.0.