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pituitary gland
noun
: a small oval endocrine organ that is attached to the infundibulum of the brain, consists of an epithelial anterior lobe joined by an intermediate part to a posterior lobe of nervous origin, and produces various internal secretions directly or indirectly impinging on most basic body functions
called also hypophysis, pituitary body
see brain illustrationExamples of pituitary gland in a Sentence
Recent Examples on the Web
Enlarged hands and feet and widening gaps between the teeth
One of the conditions Samson treats is acromegaly, a rare hormonal disorder that occurs when the pituitary gland produces too much growth hormone.
—Angela Haupt, TIME, 18 Oct. 2024
Thyroid or pituitary gland conditions: Hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid) can affect the HPO axis and result in menstrual irregularities.
—Laura Schober, Health, 5 Oct. 2024
For example, tumors on the pituitary gland can cause excessive growth.
—Kelly Burch Published, Verywell Health, 2 Oct. 2024
Hormones are released by organs of the endocrine system (pituitary gland, thyroid gland, pancreas, adrenal glands) and travel through the blood.
—Smita Patel, Verywell Health, 25 Sep. 2024
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Word History
First Known Use
1707, in the meaning defined above
Dictionary Entries Near pituitary gland
Cite this Entry
“Pituitary gland.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pituitary%20gland. Accessed 26 Nov. 2024.
Kids Definition
pituitary gland
noun
: a small oval endocrine organ located at the base of the brain that produces various hormones that regulate especially growth and reproduction
called also pituitary body
Medical Definition
pituitary gland
noun
: a small oval reddish gray very vascular endocrine organ that is attached to the infundibulum of the brain and occupies the sella turcica, that is present in all craniate vertebrates, that consists essentially of an epithelial anterior lobe derived from a diverticulum of the oral cavity and joined to a posterior lobe of nervous origin by a pars intermedia, and that has the several parts associated with various hormones which directly or indirectly affect most basic bodily functions and include substances exerting a controlling and regulating influence on other endocrine organs, controlling growth and development, or modifying the contraction of smooth muscle, renal function, and reproduction
called also hypophysis, pituitary body
see adenohypophysis, neurohypophysisMore from Merriam-Webster on pituitary gland
Britannica English: Translation of pituitary gland for Arabic Speakers
Britannica.com: Encyclopedia article about pituitary gland
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