- any of a group of compounds including the sterols, bile acids, and sex hormones, characteristically having the carbon-atom ring structure of the sterols; specif., an anabolic steroid
- [often pl.] a drug consisting of, or a regimen involving, a compound from this group
Origin of steroidfrom sterol + -oid
Informal augmented or strengthened, often, to an extreme or unnatural degree
Origin of steroidin allusion to the characteristic effects of anabolic steroids
- Any of numerous fat-soluble organic compounds that have a core structure of 17 carbon atoms arranged in four rings, found naturally in animals, plants, and fungi, or produced synthetically. Steroids include the sterols (such as cholesterol), sex hormones (such as estrogen and testosterone), corticosteroid hormones (such as cortisol), bile acids, and anabolic steroids.
- Informal An anabolic steroid.
Origin of steroidster(ol) -oid
- ste′roid′ ste·roi′dal
- (biochemistry) A class of organic compounds having a structure of 17 carbon atoms arranged in four rings; they are lipids, and occur naturally as sterols, bile acids, adrenal and sex hormones, and some vitamins; many drugs are synthetic steroids.
- (bodybuilding) Any anabolic hormone used to promote muscle growth.
- (sports, US) Any chemical compound used to enhance athletic performance.
From sterol + -oid.