suppressor

UK: /səˈprɛsə^r/

Collins Concise English Dictionary © HarperCollins Publishers::

suppressor / səˈprɛsə/ noun

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

WordReference Random House Learner's Dictionary of American English © 2025

sup•press /səˈprɛs/   v. [~ + object]

1. to put an end to the activities of (a person, group, etc.):
   The government suppressed any movement toward democracy.
2. Psychiatry to hold back deliberately (an impulse or action):
   He had a hard time suppressing his anger.
3. to keep (a thought, memory, etc.) out of conscious awareness:
   I think you're suppressing your feelings of hostility.
4. to withhold (evidence, a book, etc.) or keep back from public knowledge:
   The president's office suppressed the release of those figures.
5. to stop or arrest (a cough, hemorrhage, etc.):
   to suppress a cough.

sup•pres•sant, n. 

[countable] The doctor gave you a cough suppressant.

sup•pres•sion /səˈprɛʃən/  n. [uncountable] See -press-.

WordReference Random House Unabridged Dictionary of American English © 2025

sup•press  (sə pres′), v.t. 

1. to put an end to the activities of (a person, body of persons, etc.):
   to suppress the Communist party.
2. to do away with by or as by authority; abolish;
   stop (a practice, custom, etc.).
3. Psychiatry to keep in or repress (a feeling, smile, groan, etc.).
4. to withhold from disclosure or publication (truth, evidence, a book, names, etc.).
5. to stop or arrest (a flow, hemorrhage, cough, etc.).
6. to vanquish or subdue (a revolt, rebellion, etc.);
   quell;
   crush.
7. Electricity to reduce or eliminate (an irregular or undesired oscillation or frequency) in a circuit.

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

sup•pressed•ly  (sə prest′lē, -pres′id-), adv.  sup•press′i•ble, adj. 
sup•pres′sive, adj. 
sup•pres′sive•ly, adv. 
sup•pres′sor, sup•press′er, n.