Definition of palinal in English:

palinal

adjective

Zoology
  • Characterized by or involving backward motion, especially of the lower jaw in chewing. Contrasted with proal.

Origin

Late 19th century; earliest use found in Edward Cope (1840–1897). Irregularly from ancient Greek πάλιν backward + -al.

Pronunciation

palinal

/ˈpalɪnl/