Definition of cotylosaurian in English:

cotylosaurian

adjective

  • Belonging to, characteristic of, or designating the order Cotylosauria of extinct reptiles.

noun

  • A reptile of the order Cotylosauria; a cotylosaur. Now rare.

Origin

Late 19th century; earliest use found in Transactions of the American Philosophical Society. From scientific Latin Cotylosauria, order name + -an. With use as noun compare slightly earlier cotylosaur.

Pronunciation

cotylosaurian

/kəˌtʌɪləˈsɔːrɪən/