a potent long-acting hallucinogen.
Origin of STP
First recorded in 1965–70; probably after STP, trademark of a motor-oil additive
Definition for stp (2 of 2)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for stp
trademark scientifically treated petroleum: an oil substitute promising renewed power for an internal-combustion engine
Also: NTP standard temperature and pressure: standard conditions of 0°C temperature and 101.325 kPa (760 mmHg) pressure
Professor of Sacred Theology
a synthetic hallucinogenic drug related to mescaline
Word Origin for STP
from Latin: Sanctae Theologiae Professor Sense 4 from humorous reference to the extra power resulting from scientifically treated petroleum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for stp
[ ĕs′tē-pē′ ]
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.