steroid

/ˈstɛɹɔɪd/

IPA: /S T ER0 OY1 D/

noun
  1. 1

    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.

  2. 2

    Any anabolic hormone used to promote muscle growth.

  3. 3

    Any chemical compound used to enhance athletic performance.

Source: https://en.wiktionary.org/wiki/steroid