Definition of aetosaur in English:

aetosaur

(also aëtosaur)

noun

  • Any reptile of the extinct order (or suborder) Aetosauria, known from fossil remains of the Triassic period, and comprising herbivorous diapsids that resembled heavily armoured crocodiles.

Origin

Late 19th century; earliest use found in Isaac Funk (1839–1912), publisher and reformer. From scientific Latin Aëtosaurus, genus name from ancient Greek ἀετός eagle (from the same Indo-European base as classical Latin avis bird + ancient Greek -ετός, suffix forming nouns) + scientific Latin -saurus.

Pronunciation

aetosaur

/ˈiːtəsɔː/ /eɪˈiːtəsɔː/