Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “steroid”

steroid

noun [C]    /ˈster·ɔɪd, ˈstɪər-/
biology, chemistry any of a large group of chemical substances produced in the body or in a plant, or an artificial form of these substances used to treat various medical conditions or to illegally improve sports performance
(Definition of steroid noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of steroid

Definitions of “steroid” in other dictionaries

Word of the Day

warm-up

something that you do to prepare yourself for an activity, especially gentle exercises before a physical activity

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More