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.
Even more remarkably, part of that ancient visual system may still survive inside the modern brain as the pineal gland, an organ that helps regulate sleep.
From Science Daily ● Jul. 26, 2026
Melatonin is a hormone produced by the pineal gland that regulates the body's sleep-wake cycle.
From Science Daily ● Nov. 4, 2025
Addenbrookes Hospital in Cambridge has just finished a clinical trial on 40 pineal cyst patients to try to answer the question as to whether this operation is causing a real, or placebo improvement.
From BBC ● Dec. 4, 2024
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
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.
