• synonyms


[dee-kuh m-pres]
verb (used with object)
  1. to cause to undergo decompression.
Show More
verb (used without object)
  1. to undergo decompression.
  2. Informal. to relax; unwind.
Show More

Origin of decompress

1900–05; translation of French décomprimer. See de-, compress
Related formsde·com·pres·sive, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for decompress

Contemporary Examples

Historical Examples

  • He cited the waste of oxygen which resulted by having to decompress Bandit every time someone left or entered the ship.

British Dictionary definitions for decompress


  1. to relieve (a substance) of pressure or (of a substance) to be relieved of pressure
  2. to return (a diver, caisson worker, etc) to a condition of normal atmospheric pressure gradually from a condition of increased pressure or (of a diver, etc) to be returned to such a condition
Show More
Derived Formsdecompression, noundecompressive, adjective
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

Word Origin and History for decompress


1905, from de- + compress. Related: Decompressed; decompressing.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper