Dictionary.com
definitions
  • synonyms

parietal eye

noun
  1. Zoology. a median outgrowth of the diencephalon anterior to the pineal apparatus, having visual adaptations in many anamniotes and lizards.
Show More

Origin of parietal eye

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018