[ kuhm-pres-er ]
/ kəmˈprɛs ər /
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a person or thing that compresses.
Anatomy. a muscle that compresses some part of the body.
Surgery. an instrument for compressing a part of the body.
a pump or other machine for reducing volume and increasing pressure of gases in order to condense the gases, drive pneumatically powered machinery, etc.
Electronics. a transducer that produces an output with a range of voltages whose ratio is smaller than that of the range of the input signal.Compare expander (def. 2).



In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.

Origin of compressor

First recorded in 1745–55; compress + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for compressor

/ (kəmˈprɛsə) /


any reciprocating or rotating device that compresses a gas
the part of a gas turbine that compresses the air before it enters the combustion chambers
any muscle that causes compression of any part or structure
a medical instrument for holding down a part of the body
an electronic device for reducing the variation in signal amplitude in a transmission systemCompare expander, compander
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 compressor

[ kəm-prĕsər ]


A muscle that causes compression of a structure upon contraction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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