compression

noun

com·​pres·​sion kəm-ˈpre-shən 

1

a

: the act, process, or result of compressing

b

: the state of being compressed

2

: the process of compressing the fuel mixture in a cylinder of an internal combustion engine (as in an automobile)

3

: the compressed remains of a fossil plant

4

: conversion (as of data, a data file, or a communications signal) in order to reduce the space occupied or bandwidth required

compressional

kəm-ˈpresh-nəl 

-ˈpre-shə-nᵊl

adjective

Synonyms

• squeezing
• condensing
• contraction
• condensation
• squeeze
• contracting
• constriction

Examples of compression in a Sentence

the compression of a long, complicated story into a two-hour movie is never easy

Recent Examples on the Web

Daviet died of cardiorespiratory failure with signs of asphyxiation and cervical compression, according to the police prosecutor’s statement. —Catherine Nicholls, CNN Money, 24 Oct. 2025

Five years later, its compression-fit, tech-enabled athletic wear is set to debut this month. —Marcus Smith, Sacbee.com, 24 Oct. 2025

The expandable design gives you extra packing space, while seatbelt-style compression straps help keep your clothes secure and maximize interior storage area. —Nora Colomer May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 24 Oct. 2025

On long flights, your legs tend to swell, leading to discomfort, cramping, and even numbness—but a good pair of compression leggings, like this pick from CompressionZ, can prevent those symptoms. —Hillary Maglin, Travel + Leisure, 23 Oct. 2025

Word History

First Known Use

15th century, in the meaning defined at sense 1a

Rhymes for compression

• accession
• aggression
• concession
• confession
• depression
• digression
• discretion
• expression
• impression
• obsession
• oppression
• possession

Kids Definition

compression

noun

com·​pres·​sion kəm-ˈpresh-ən 

1

: the act, process, or result of compressing : the state of being compressed

2

: the process of compressing the fuel mixture in the cylinders of an internal-combustion engine

compressional

-(ə-)nəl 

adjective

Medical Definition

compression

noun

com·​pres·​sion kəm-ˈpresh-ən 

: the act, process, or result of compressing especially when involving a compressing force on a bodily part

compression of an artery by forceps

compression of the brain by the bones of a depressed fracture