steroid
Pronunciation:
/ˈstɛɹɔɪd/noun
Definitions
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.
Any anabolic hormone used to promote muscle growth.
Any chemical compound used to enhance athletic performance.