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pineal

[pin-ee-uhl, pahy-nee-, pahy-nee-]

adjective

  1. resembling a pine cone in shape.

  2. of or relating to the pineal body.



pineal

/ 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
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Other Word Forms

  • prepineal adjective
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Word History and Origins

Origin of pineal1

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
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Word History and Origins

Origin of pineal1

C17: via French from Latin pīnea pine cone
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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.

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

It had a prominent pineal foramen -- a hole in the top of its head that many lizard species use to sense sunlight and judge the length of daylight hours.

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.

These supplements, including sugary gummies, typically offer much higher doses than what the pineal gland produces to help shift circadian rhythm to night mode.

Melatonin is a naturally occurring hormone produced by the pineal gland, a small structure at the center of the brain.

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pinepineal apparatus