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parietal eye
noun
- Zoology. a median outgrowth of the diencephalon anterior to the pineal apparatus, having visual adaptations in many anamniotes and lizards.
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Word History and Origins
Origin of parietal eye1
First recorded in 1885–90
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Example Sentences
"The pineal gland is present in most vertebrate, while the parietal eye is only present some lizards, the tuatara some frogs and salamander," Tosini explained to Salon.
From Salon
Some fish, amphibians and reptiles have a third, so-called parietal, eye.
From Economist
Then the researchers created caps with pieces of Ping-Pong ball, and attached them with surgical glue and cork as a cushion, to the heads of the anoles to interfere with polarized light that might reach an organ in the brain called the parietal eye.
From New York Times
The team didn’t just block all light to the parietal eye, because it controls the daily rhythms of the lizard.
From New York Times
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