decompression decompression n. 1. the process of experiencing {decompression}; the act or process of relieving or reducing pressure.

Syn: decompressing. [WordNet 1.5 +PJC]

2. the reduction of atmospheric pressure experienced by divers rising from deep water to the surface, thus reducing the concentration of dissolved atmospheric gases in the blood; -- especially applied to a gradual reduction of such pressure. [PJC]

3. the process, analogous to sense 2, undergone by divers in a decompression chamber, in which an artificially high atmospheric pressure is gradually lowered to normal pressure. [PJC]

4. a return to a normal, more relaxed state after a period of intense stress, psychological pressure, or urgent activity; -- of people. [PJC]

5. (Computers) the process of converting digitally encoded data from a more compact (compressed) form to its original, larger size.

Note: The process of compression and decompression may completely recover all of the original data (called lossless compression), or may lose some of the original data in order to achieve higher degress of compression (lossy compression). The latter is used especially with images or video data, which may be of very large size relative to text, and for which small changes may be imperceptible to the human eye. The {JPEG} data compression format is a lossy format. [PJC]

The Collaborative International Dictionary of English. 2000.

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Look at other dictionaries:

  • décompression — [ dekɔ̃presjɔ̃ ] n. f. • 1868; de dé et compression 1 ♦ Action de décomprimer; cessation ou diminution de la compression, de la pression d un gaz. ⇒ détente, dilatation , expansion. Robinet, soupape de décompression. ♢ Réduction progressive de la …   Encyclopédie Universelle

  • Decompression — has several meanings: Decompression (physics), the release of pressure and the opposition of physical compression Decompression sickness, a condition arising from the precipitation of dissolved gases into bubbles inside the body on… …   Wikipedia

  • Decompression — Décompression Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom …   Wikipédia en Français

  • decompression — 1905, from DE (Cf. de ) + COMPRESSION (Cf. compression) …   Etymology dictionary

  • decompression — ► NOUN 1) reduction in air pressure. 2) the process of decompressing …   English terms dictionary

  • decompression — [dē′kəmpresh′ən] n. 1. a decompressing or being decompressed 2. a surgical operation to relieve excessive pressure, as in the cranium, a body cavity, etc …   English World dictionary

  • decompression — The reduction of atmospheric pressure. Particularly, various techniques for preventing decompression sickness (also called caisson disease) by gradual decompression. Decompression sickness is caused by the evolution of nitrogen bubbles in the… …   Aviation dictionary

  • Décompression — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Décompression », sur le Wiktionnaire (dictionnaire universel) Le mot décompression peut désigner  …   Wikipédia en Français

  • decompression — [[t]di͟ːkəmpre̱ʃ(ə)n[/t]] 1) N UNCOUNT Decompression is the reduction of the force on something that is caused by the weight of the air. Decompression blew out a window in the plane. 2) N UNCOUNT: usu N n Decompression is the process of bringing… …   English dictionary

  • decompression — n. 1 release from compression. 2 a gradual reduction of air pressure on a person who has been subjected to high pressure (esp. underwater). Phrases and idioms: decompression chamber an enclosed space for subjecting a person to decompression.… …   Useful english dictionary

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