Definition of psittacosaur in US English:

psittacosaur

noun

  • A dinosaur of the family Psittacosauridae; a psittacosaurus.

Origin

1920s. From scientific Latin Psittacosaurus Psittacosaurus: see -saur.

Pronunciation

psittacosaur

/ˈsɪtəkəˌsɔː/