plural steroids
: any of various compounds containing a 17-carbon 4-ring system and including the sterols and numerous hormones (such as anabolic steroids or corticosteroids) and glycosides
ACTH travels in the bloodstream to the adrenal cortex and causes the release of steroids.—Lester Grinspoon et al.
asthma and COPD treated with synthetic steroids
often, specifically : anabolic steroid
an athlete taking/using steroids
a steroid user
Their … reporting triggered a national wake-up call about steroid use that led to congressional hearings, and, at long last, steroid testing in baseball. —Rick Reilly
see also steroid hormone
see also:

Examples of steroid in a Sentence

He was accused of taking steroids.
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.
There are also some medications, such as glucocorticoid steroids and certain cancer therapies, that can accelerate bone loss. — Cheryl Fenton, Flow Space, 27 Oct. 2026 Gigantic Fantastic also explores the development of steroids themselves, their physiological effects, as well as other image and performance-enhancing drugs and their dangers. — Gavin Francis, The New York Review of Books, 24 Oct. 2026 Pain in the steroid-only group, by contrast, had returned to its pretreatment level. — Tom Gavin, EverydayHealth.com, 7 Oct. 2026 While three players have exceeded that total in the National League, all were active in the steroids era and their accomplishment has been tainted as a result, which is not the case for Judge. — Assistant Sports Editor, Los Angeles Times, 28 Sep. 2026 See All Example Sentences for steroid

Word History

Etymology

International Scientific Vocabulary sterol + -oid

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of steroid was in 1926

Browse Nearby Words

Cite this Entry

“Steroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/steroid. Accessed 29 Oct. 2026.

Kids Definition

: any of various chemical compounds that include numerous hormones (as estrogen and testosterone) compare anabolic steroid

Medical Definition

: any of numerous natural or synthetic compounds containing a 17-carbon 4-ring system and including the sterols and various hormones and glycosides see anabolic steroid

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