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steroid

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Definition of steroid

noun

Biochemistry
  • any of a large class of organic compounds with a characteristic molecular structure containing four rings of carbon atoms (three six-membered and one five). They include many hormones, alkaloids, and vitamins.

Derivatives

steroidal

Pronunciation: /-ˈrɔɪd(ə)l/
adjective

Origin:

1930s: from sterol + -oid

steroid in other Oxford dictionaries

Definition of steroid in the US English dictionary