# Suppression

Suppression may refer to:

## Laws

* Suppression of Communism Act
* Suppression order a type of censorship where a court rules that certain information cannot be published
* Tohunga Suppression Act 1907, an Act of the Parliament of New Zealand aimed to replace tohunga as traditional Māori healers with "modern" medicine

## Mathematics and science
### Biology, psychology and healthcare

* Suppression (eye), of an eye is a subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia
* Appetite suppression
* Bone marrow suppression, the decrease in cells responsible for providing immunity, carrying oxygen, and those responsible for normal blood clotting
* Cough medicine, which may contain a cough suppressant, a medicinal drug used in an attempt to treat coughing
* Expressive suppression, a psychological aspect of emotion regulation
* Flash suppression, a phenomenon of visual perception in which an image presented to one eye is suppressed by a flash of another image presented to the other eye
* Genetic suppression
* Reflux suppressant, in medicine
* Suppression subtractive hybridization, in biochemistry
* Thought suppression, the psychological process of deliberately trying to stop thinking about certain thoughts, associated with obsessive-compulsive disorder

### Other uses in mathematics and science

* Compton suppression, in nuclear physics
* Zero suppression, in mathematics and information theory

## Politics

* Censorship, the suppression of public communication considered objectionable to the general body of people as determined by a government or media outlet
* Suppression of dissent, occurs when an individual or group tries to censor, persecute or otherwise oppress the other party rather than communicate logically
* Suppression of evidence, the act of preventing evidence from being shown in a trial
* Voter suppression, a strategy to influence the outcome of an election by discouraging or preventing people from exercising their right to vote
* Catch and kill, buying exclusive publication rights to an individual's story, and then suppressing the information

## Religion

* Suppression (parish), the forced closure of a Catholic parish or association
* Religious intolerance, or religious suppression, intolerance against another's religious beliefs or practices by individuals, private groups, government agencies or the whole government
* Suppressive Person, a Church of Scientology concept discussed in the book, The Cause of Suppression

## Technology

* Electromagnetic interference suppression, e.g., of electrical noise from switches and motors
* Fire suppression system
** Firefighting, involves the suppression of fire
* Free energy suppression and other suppressed technology
* Silence suppression, in telephony
* Transient-voltage-suppression diode, an electronic component used to protect sensitive electronics from voltage spikes induced on connected wires

## Weapons

* Suppressive fire, weapons fire that degrades the performance of a target below the level needed to fulfill its mission
* Suppressor, a device attached to or part of the barrel of a firearm which reduces the amount of noise and flash generated by firing the weapon

## Other uses

* Suppressed correlative, a logical fallacy