[ suh-pres ]
/ səˈprɛs /

verb (used with object)

Origin of suppress

1375–1425; late Middle English suppressen < Latin suppressus (past participle of supprimere to press down), equivalent to sup- sup- + pressus (see press1)

OTHER WORDS FROM suppress Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for suppressor

British Dictionary definitions for suppressor (1 of 2)

/ (səˈprɛsə) /


a person or thing that suppresses
a device fitted to an electrical appliance to suppress unwanted electrical interference to audiovisual signals

British Dictionary definitions for suppressor (2 of 2)

/ (səˈprɛs) /

verb (tr)

to put an end to; prohibit
to hold in check; restrainI was obliged to suppress a smile
to withhold from circulation or publicationto suppress seditious pamphlets
to stop the activities of; crushto suppress a rebellion
  1. to reduce or eliminate (unwanted oscillations) in a circuit
  2. to eliminate (a particular frequency or group of frequencies) in a signal
  1. to resist consciously (an idea or a desire entering one's mind)
  2. to exercise self-control by preventing the expression of (certain desires)Compare repress (def. 3)

Derived forms of suppress

suppresser, nounsuppressible, adjective

Word Origin for suppress

C14: from Latin suppressus held down, from supprimere to restrain, from sub- down + premere to press
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

Medical definitions for suppressor

[ sə-prĕs ]


To curtail or inhibit the activity of something, such as the immune system.
To deliberately exclude unacceptable desires or thoughts from the mind.
To reduce the incidence or severity of a condition or symptom, such as a hemorrhage.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for suppressor

[ sə-prĕsər ]

A mutant gene that suppresses the phenotypic expression of another usually mutant gene.
A device, such as a resistor or grid, that is used in an electrical or electronic system to reduce unwanted currents.♦ A suppressor grid in a vacuum tube such as a pentode is designed to prevent the secondary emission of electrons from the plate. When electrons emitted by the tube's cathode strike the plate, their energies can be high enough to cause secondary emission of low-energy electrons from the plate, and these electrons can drift away into other positively charged electrodes in the tube (like the screen or the control grid), drawing current from the plate. A negatively charged suppressor grid near the plate repels these low-energy electrons and pushes them back toward the plate so that no current is lost, increasing the efficiency of the tube.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.