Definition of pareiasaur in English:

pareiasaur

Pronunciation /pəˈrʌɪəsɔː/

noun

(also pariasaur)
  • A large, extinct, herbivorous reptile of the genus Pareiasaurus or family Pareiasauridae, known from late Permian fossil remains found in Eurasia and Africa and having a body armoured with bony scales.

Origin

Early 20th century; earliest use found in Ray Lankester (1847–1929), zoologist. From scientific Latin Pareiasauria, suborder name from Pareiasaurus, genus name + -ia.