1 hypothalamus | Definition of hypothalamus

hypothalamus

noun
hy路​po路​thal路​a路​mus | \ 藢h墨-p艒-藞tha-l蓹-m蓹s How to pronounce hypothalamus (audio) \

Definition of hypothalamus

: a basal part of the diencephalon that lies beneath the thalamus on each side, forms the floor of the third ventricle, and includes vital autonomic regulatory centers

Examples of hypothalamus in a Sentence

Recent Examples on the Web

One reason for the effect is that the hypothalamus in the brain regulates body temperature as well as a number of other functions, including the sleep-wake cycle. Ryan Prior, CNN, "A hot bath 1 or 2 hours before bedtime can significantly improve your sleep, researchers say," 24 July 2019 Among many other critical functions, this grouping of the brain鈥檚 hypothalamus and the pituitary and adrenal glands regulates how the body processes stress. San Diego Union-Tribune, "Huge study explores genetics of PTSD in more than 165,000 U.S. veterans," 5 Aug. 2019 Bromage believes its source is the same part of the brain that鈥檚 already known to generate the circadian rhythm, the hypothalamus. Quanta Magazine, "Teeth May Reveal a Multi-Day Biological Clock," 13 Dec. 2016 When a stressor occurs, the amygdala region perceives the threat and sends a distress signal to the hypothalamus, which acts like a command center. Bridget Alex, Discover Magazine, "What Science Says About Why You're Stressed and How to Cope," 21 June 2019 Something, perhaps a substance that accumulates in the hypothalamus, might modulate the circadian clock on a multi-day cycle. Quanta Magazine, "Teeth May Reveal a Multi-Day Biological Clock," 13 Dec. 2016 The part of the brain that controls circadian timing is the suprachiasmatic nucleus within the hypothalamus. SELF, "We Asked a Doctor How Much You Need to Care About Your Circadian Rhythm," 4 Sep. 2018 According to the Mayo Clinic, stress affects your brain鈥檚 hypothalamus, which is the control center for the hormones that govern your menstrual cycle. Colleen Stinchcombe, SELF, "Can Traveling Really Make Your Period Late?," 10 Aug. 2018 The hypothalamus helps regulate a number of important behavioral and physiological functions such as body temperature, eating and drinking habits, emotional well-being and sleep, according to the National Institute of General Medical Sciences. Mark Lieber, CNN, "Maintaining a daily rhythm is important for mental health, study suggests," 15 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hypothalamus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hypothalamus

1896, in the meaning defined above

History and Etymology for hypothalamus

New Latin

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More Definitions for hypothalamus

hypothalamus

noun
hy路​po路​thal路​a路​mus | \ -藞thal-蓹-m蓹s How to pronounce hypothalamus (audio) \
plural hypothalami\ -​藢m墨 How to pronounce hypothalami (audio) \

Medical Definition of hypothalamus

: a basal part of the diencephalon that lies beneath the thalamus on each side, forms the floor of the third ventricle, and includes vital autonomic regulatory centers (as for the control of food intake)

More from Merriam-Webster on hypothalamus

Nglish: Translation of hypothalamus for Spanish Speakers

Britannica.com: Encyclopedia article about hypothalamus