¹STP

noun \ˌes-ˌtē-ˈpē\

Definition of STP

: a hallucinogenic drug chemically related to mescaline and amphetamine

probably from STP, a trademark for a motor fuel additive

First Known Use: 1967

abbreviation

shielded twisted pair

standard temperature and pressure

Next Word in the Dictionary: stpdPrevious Word in the Dictionary: stowreAll Words Near: STP

What made you want to look up STP? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears