STP

noun
\ ˌes-ˌtē-ˈpē How to pronounce STP (audio) \

Definition of STP

 (Entry 1 of 2)

: a hallucinogenic drug chemically related to mescaline and amphetamine

Definition of STP (Entry 2 of 2)

1 shielded twisted pair
2 standard temperature and pressure

First Known Use of STP

Noun

1967, in the meaning defined above

History and Etymology for STP

Noun

probably from STP, a trademark for a motor fuel additive

Learn More About STP

Dictionary Entries Near STP

stowre

STP

stpd

See More Nearby Entries 

Statistics for STP

Cite this Entry

“STP.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/STP. Accessed 30 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for STP

STP

noun
\ ˌes-ˌtē-ˈpē How to pronounce STP (audio) \

Medical Definition of STP

 (Entry 1 of 2)

: a hallucinogenic drug chemically related to mescaline and amphetamine

called also DOM

STP

abbreviation

Medical Definition of STP (Entry 2 of 2)

standard temperature and pressure

WORD OF THE DAY

Test Your Vocabulary

Name That Food

  • a-light
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!