aldosterone

noun

al·​do·​ste·​rone al-ˈdä-stə-ˌrōn How to pronounce aldosterone (audio)
ˌal-dō-ˈster-ˌōn, 
-ˈstir- How to pronounce aldosterone (audio)
ˈal-dō-stə-ˌrōn
: a steroid hormone C21H28O5 of the adrenal cortex that functions in the regulation of the salt and water balance of the body

Examples of aldosterone in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
According to his parents, Ryan was diagnosed with Addison’s disease, an autoimmune disease in which the body doesn’t produce cortisol and aldosterone. — Edie Peffley, NBC news, 8 July 2026 Baxfendy works differently from existing therapies by targeting aldosterone, a hormone that can raise blood pressure to unhealthy levels and contribute to heart and kidney complications. — Toria Sheffield, PEOPLE, 13 June 2026 But many people with hypertension don't get enough reduction with current medications, and University of Pennsylvania's Cohen says there's a lot of interest in a new class of medication that works by targeting the hormone aldosterone, which helps regulate fluid and sodium in the body. — Allison Aubrey, NPR, 7 Sep. 2025 Incidentally, aldosterone was first identified in 1952 by scientists at Middlesex Hospital Medical School – now known as the UCL Medical School, which led this latest research. — New Atlas, 4 Sep. 2025 See All Example Sentences for aldosterone

Word History

Etymology

aldehyde + -o- + -sterone

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of aldosterone was in 1954

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Cite this Entry

“Aldosterone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aldosterone. Accessed 29 Sep. 2026.

Medical Definition

: a steroid hormone C21H28O5 of the adrenal cortex that functions in the regulation of the salt and water balance of the body

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