What does pineal gland mean?

Definitions for pineal gland
pineal gland

Here are all the possible meanings and translations of the word pineal gland.

Princeton's WordNet

  1. pineal gland, pineal body, epiphysis cerebri, epiphysisnoun

    a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin


  1. pineal glandnoun

    A small, pinecone-shaped endocrine gland found near the centre of the brain that produces melatonin.


  1. Pineal gland

    The pineal gland is a small endocrine gland in the vertebrate brain. It produces the serotonin derivative melatonin, a hormone that affects the modulation of wake/sleep patterns and seasonal functions. Its shape resembles a tiny pine cone, and it is located near the centre of the brain, between the two hemispheres, tucked in a groove where the two rounded thalamic bodies join. Nearly all vertebrate species possess a pineal gland. The most important exception is the hagfish, which is often thought of as the most primitive type of vertebrate. Even in the hagfish, though, there may be a "pineal equivalent" structure in the dorsal diencephalon. The lancelet amphioxus, the nearest existing relative to vertebrates, also lacks a recognizable pineal gland. The lamprey, however, does possess one. A few "higher" types of vertebrates, including the alligator, lack pineal glands because they have been lost over the course of evolution.

The Nuttall Encyclopedia

  1. Pineal Gland

    a small cone-shaped body of yellowish matter in the brain, the size of a pea, and situated in the front of the cerebellum, notable as considered by Descartes to be the seat of the soul, but is now surmised to be a rudimentary remnant of some organ, of vision it would seem, now extinct.

U.S. National Library of Medicine

  1. Pineal Gland

    A light-sensitive neuroendocrine organ attached to the roof of the THIRD VENTRICLE of the brain. The pineal gland secretes MELATONIN, other biogenic amines, and neuropeptides.

Editors Contribution

  1. pineal gland

    A type of gland with various functions.

    The pineal gland within the body of a human being is important as it produces melatonin and modulates patterns of behavior.

    Submitted by MaryC on September 6, 2020  

Matched Categories

How to pronounce pineal gland?

How to say pineal gland in sign language?


  1. Chaldean Numerology

    The numerical value of pineal gland in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of pineal gland in Pythagorean Numerology is: 5

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