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.
It has evolved into the pineal gland, a light-sensitive organ in the brain.
From Science Daily ● Apr. 27, 2026
But in the case of cysts of the pineal gland, there is a large amount of information on the web which prompts patients to seek surgery for minor and often unrelated symptoms.
From BBC ● Dec. 4, 2024
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
Melatonin is produced naturally in the pineal gland to signal the body that it is time to sleep and regulate its circadian rhythm -- the physiological cycle over a 24-hour period.
From Science Daily ● Nov. 13, 2023
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.
