ste‧roid /ˈstɪərɔɪd, ˈste- $ ˈstɪr-/ noun [countable]
[Date: 1900-2000; Origin: sterol type of alcohol (20-21 centuries) (from cholesterol) + -oid]

1. a chemical that the body produces naturally or that can be made as a drug to treat illness and injuries. Steroids are sometimes used illegally by people doing sports to improve their performance
on steroids
a body builder on steroids

2. something on steroids American English informal used to say that something is much bigger, stronger, more impressive etc than something else that is similar to it – used humorously:
They sell cinnamon rolls on steroids.

[TahlilGaran] Dictionary of Contemporary English ▲