verb (used with object)
to put an end to the activities of (a person, body of persons, etc.): to suppress the Communist and certain left-leaning parties.
to do away with by or as by authority; abolish; stop (a practice, custom, etc.).
to keep in or repress (a feeling, smile, groan, etc.).
to withhold from disclosure or publication (truth, evidence, a book, names, etc.).
to stop or arrest (a flow, hemorrhage, cough, etc.).
to vanquish or subdue (a revolt, rebellion, etc.); quell; crush.
Electricity. to reduce or eliminate (an irregular or undesired oscillation or frequency) in a circuit.

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

suppressedly [suh-prest-lee, -pres-id-] , adverb
suppressible, adjective
suppressive, adjective
suppressively, adverb
suppressor, suppresser, noun
nonsuppressed, adjective
nonsuppressive, adjective
nonsuppressively, adverb
nonsuppressiveness, noun
presuppress, verb (used with object)
quasi-suppressed, adjective
resuppress, verb (used with object)
self-suppressing, adjective
self-suppressive, adjective
unsuppressed, adjective
unsuppressible, adjective
unsuppressive, adjective
well-suppressed, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
suppress (səˈprɛs)
1.  to put an end to; prohibit
2.  to hold in check; restrain: I was obliged to suppress a smile
3.  to withhold from circulation or publication: to suppress seditious pamphlets
4.  to stop the activities of; crush: to suppress a rebellion
5.  electronics
 a.  to reduce or eliminate (unwanted oscillations) in a circuit
 b.  to eliminate (a particular frequency or group of frequencies) in a signal
6.  psychiatry
 a.  to resist consciously (an idea or a desire entering one's mind)
 b.  Compare repress to exercise self-control by preventing the expression of (certain desires)
[C14: from Latin suppressus held down, from supprimere to restrain, from sub- down + premere to press]

suppressor (səˈprɛsə)
1.  a person or thing that suppresses
2.  a device fitted to an electrical appliance to suppress unwanted electrical interference to audiovisual signals

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

late 14c., "to put down by force or authority," from L. suppressus, pp. of supprimere "press down, stop, check, stifle," from sub "down, under" + premere "push against" (see press (v.1)). Sense of "prevent or prohibit the circulation of" is from 1560.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

suppress sup·press (sə-prěs')
v. sup·pressed, sup·press·ing, sup·press·es

  1. To curtail or inhibit the activity of something, such as the immune system.

  2. To deliberately exclude unacceptable desires or thoughts from the mind.

  3. 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.
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American Heritage
Science Dictionary
suppressor   (sə-prěs'ər)  Pronunciation Key 
  1. A mutant gene that suppresses the phenotypic expression of another usually mutant gene.

  2. 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for +suppressor
Inactivation of one allele of some tumor suppressor genes is sufficient to cause tumors.
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