pineal
Americanadjective
-
resembling a pine cone
-
of or relating to the pineal gland
Other Word Forms
Etymology
Origin of pineal
1675–85; < New Latin pīneālis, equivalent to Latin pīne ( a ) pine cone, noun use of feminine of pīneus of a pine tree ( pīn ( us ) pine 1 + -eus -eous ) + -ālis -al 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In many vertebrates, the pineal system is directly sensitive to light.
From Science Daily ● Jul. 26, 2026
"It's mind-boggling that our pineal gland's ability to regulate our sleep according to light stems from the cyclopean median eye of a distant ancestor 600 million years ago," concludes Dan-E Nilsson.
From Science Daily ● Apr. 27, 2026
The pineal gland produces melatonin, a hormone that helps control the body's circadian rhythm, including sleep patterns.
From Science Daily ● Apr. 27, 2026
He warned a pineal cyst should only be removed in extremely rare circumstances, and believes the operations' successful results could be explained by the "placebo effect".
From BBC ● Dec. 4, 2024
Descartes solved this problem as best he could by claiming that mind acted on the body through the pineal gland.
From "The Invention of Science" by David Wootton
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
