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pineal

American  
[pin-ee-uhl, pahy-nee-, pahy-nee-] / ˈpɪn i əl, ˈpaɪ ni-, paɪˈni- /

adjective

  1. resembling a pine cone in shape.

  2. of or relating to the pineal body.


pineal British  
/ ˈpɪnɪəl, paɪˈniːəl /

adjective

  1. resembling a pine cone

  2. of or relating to the pineal gland

"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

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.

See Examples For:

Although humans do not use the pineal gland to see images, it remains connected to the body's response to light and darkness.

From Science Daily ● Jul. 26, 2026

The pineal gland produces melatonin, a hormone that helps control the circadian rhythm.

From Science Daily ● Jul. 26, 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

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