pineal gland

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noun

a small, cone-shaped endocrine organ in the posterior forebrain, secreting melatonin and involved in biorhythms and gonadal development.

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Also called epiphysis.

Origin of pineal gland

First recorded in 1705–15

Words nearby pineal gland

pine, pineal, pineal apparatus, pineal body, pineal eye, pineal gland, pineapple, pineapple guava, pineapple tree, pineapple weed, pine barren

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use pineal gland in a sentence

Others who, because of a tumor in the pituitary gland, may overproduce HGH develop a different problem: gigantism.
Is HGH, Allegedly Alex Rodriguez’s Drug of Choice, Really So Bad?|Kent Sepkowitz|August 1, 2013|DAILY BEAST
Carrey sings: "You're a big, big man with a little bitty gland, so you need something bigger with a hairpin trigger."
"Hee-Haw": Jim Carrey Mocks Gun Lovers & Charlton Heston In Spoof|Anna Klassen|March 25, 2013|DAILY BEAST
HGH is a hormone normally made in tiny amounts by the pituitary gland in all of us.
Where Were the Doctors to Testify at Roger Clemens’s Perjury Trial?|Kent Sepkowitz|June 20, 2012|DAILY BEAST
To decimate the malformation, destroying the offending oil gland once it morphs into something with a head.
My Odyssey Into Extreme Dermatology|Elizabeth Hayt|April 15, 2009|DAILY BEAST

The thymus gland attains a considerable development in the embryo and shrinks away to the merest vestige in the adult.
Man And His Ancestor|Charles Morris
The strong probability is that this gland belongs in the same category with other embryonic survivals yet to be pointed out.
Man And His Ancestor|Charles Morris
It is nearly always accompanied by a distinct hypertrophy of the thymus gland.
Essays In Pastoral Medicine|Austin Malley
I want a ball bat to club every country jake doctor that looks me over and asks about my pituitary gland.
David Lannarck, Midget|George S. Harney
The mucus secreted from gland cells in this lining makes a slippery surface so that the food may slip down easily.
A Civic Biology|George William Hunter

British Dictionary definitions for pineal gland

pineal gland

pineal body

noun

a pea-sized organ in the brain, situated beneath the posterior part of the corpus callosum, that secretes melatonin into the bloodstreamTechnical names: epiphysis, epiphysis cerebri

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

Scientific definitions for pineal gland

pineal gland

A small gland located near the brain and primarily involved in the production and secretion of the hormone melatonin, which regulates circadian rhythms in many animals, including humans.