Definition of predentary in English:

predentary

adjective

Zoology
  • Designating a bone situated in front of the dentary bone in some non-mammalian vertebrates (especially ornithischian dinosaurs).

noun

Zoology
  • A predentary bone.

Origin

Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist.