[ pruh-puhl-shuh n ]
/ prəˈpʌl ʃən /


the act or process of propelling.
the state of being propelled.
a means of propelling; propelling force, impulse, etc.

Nearby words

  1. props,
  2. props ,
  3. propter hoc,
  4. proptosis,
  5. proptotic,
  6. propulsive,
  7. propyl,
  8. propyl alcohol,
  9. propyl aldehyde,
  10. propyl group

Origin of propulsion

1605–15; < Latin prōpuls(us) (past participle of prōpellere to propel) + -ion

Related formspro·pul·sive [pruh-puhl-siv] /prəˈpʌl sɪv/, pro·pul·so·ry, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for propulsory


/ (prəˈpʌlʃən) /


the act of propelling or the state of being propelled
a propelling force
Derived Formspropulsive (prəˈpʌlsɪv) or propulsory, adjective

Word Origin for propulsion

C15: from Latin prōpellere to propel

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

Word Origin and History for propulsory



1610s, "expulsion," noun of action formed from propuls-, past participle stem of Latin propellere "to propel" (see propel). Meaning "act of driving forward, propulsive force" first attested 1799.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for propulsory


[ prə-pŭlshən ]


A driving or propelling force.
The leaning or falling forward characteristic of the festination of Parkinsonism.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.