steroid

noun

ste·​roid ˈster-ˌȯid 

also

ˈstir- 

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

steroid adjective

or steroidal

stə-ˈrȯi-dᵊl 

see also:

on steroids

Examples of steroid in a Sentence

He was accused of taking steroids.

Recent Examples on the Web

The package also contained counterfeit Apple AirPods and several types of powders and liquids that tested positive for steroids. — Todd Feurer, CBS News, 10 Nov. 2026

During the day the colorless Orb suggests an egg on steroids, incongruously suspended behind the Betsy over the alleyway at 14th Street. — Elisa Turner, Miami Herald, 29 Oct. 2026

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

Word History

Etymology

International Scientific Vocabulary sterol + -oid

First Known Use

1926, in the meaning defined above

Phrases Containing steroid

• anabolic steroid
• steroid hormone

Rhymes for steroid

• alloyed
• android
• annoyed
• avoid
• convoyed
• crinoid
• cuboid
• cycloid
• decoyed
• deployed
• dermoid
• destroyed

Kids Definition

steroid

noun

ste·​roid ˈstir-ˌȯid  ˈster- 

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

Medical Definition

steroid

noun

ste·​roid ˈsti(ə)r-ˌȯid 

also

ˈste(ə)r- 

: 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

steroid adjective

or steroidal

stə-ˈrȯid-ᵊl