This shows grade level based on the word's complexity.
pineal eye
Save This Word!
This shows grade level based on the word's complexity.
noun
an eyelike structure that develops from the pineal apparatus in certain cold-blooded vertebrates.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I canât figure out _____ gave me this gift.
Also called third eye.
Origin of pineal eye
First recorded in 1885â90
Words nearby pineal eye
Pindus, pine, pineal, pineal apparatus, pineal body, pineal eye, pineal gland, pineapple, pineapple guava, pineapple tree, pineapple weed
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use pineal eye in a sentence
British Dictionary definitions for pineal eye
pineal eye
noun
an outgrowth of the pineal gland that forms an eyelike structure on the top of the head in certain cold-blooded vertebrates
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for pineal eye
pineal eye
[ pÄnâČÄ-Él, pÄ«âČnÄ-Él ]
A sensory structure capable of light reception, appearing as a spot on the top of the head in lampreys, hagfish, amphibians, and some reptiles, especially the tuatara. Pineal eyes can contain a rudimentary cornea, lens, cone cells, and retina, and are thought to be sensitive to light and dark but not to be able to form images.
The American HeritageÂź Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.