backwash
backwash ack"wash`, v. t. 1. To clean the oil from (wool) after combing. --Ash. [1913 Webster]

2. (Chem.) To clean (a filter, a chromatography column, a water softener, etc.) by passing liquid through in the reverse of the normal direction of flow. This procedure dislodges particles which clog the pores of the filter or column packing, removing them from the filter or column. [PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • backwash — ack wash , n. 1. The flow of water propelled backward by the propeller, paddle wheel, or oars of a boat. [PJC] 2. (Aeron.) The backward flowing air within the wash of an airplane, caused mostly by the engine. [PJC] …   The Collaborative International Dictionary of English

  • backwash — 1876, motion of a receeding wave, from BACK (Cf. back) (adj.) + WASH (Cf. wash) (n.) …   Etymology dictionary

  • backwash — [n] repercussion aftermath, result, wake; concepts 230,674 …   New thesaurus

  • backwash — ► NOUN ▪ receding waves flowing outwards behind a ship …   English terms dictionary

  • backwash — [bak′wôsh΄] n. 1. water moved backward, as by a ship, an oar, etc. 2. a backward current or flow, as of air from an airplane propeller 3. a reaction or commotion caused by some event …   English World dictionary

  • Backwash — The word Backwash may refer to:* Backwash (geography), the water that rolls back down a beach after a wave has broken * Backwash (physical phenomenon), the backwards flow of air or water * Backwash, the process of thoroughly cleaning a pool… …   Wikipedia

  • backwash — [[t]bæ̱kwɒʃ[/t]] N SING The backwash of an event or situation is an unpleasant situation that exists after it and as a result of it. ...the backwash of the events of 1989... The Treasury had been blaming the pound s weakness on the backwash from… …   English dictionary

  • backwash — backwasher, n. /bak wosh , wawsh /, n. 1. Naut. water thrown backward by the motion of oars, propellers, paddle wheels, etc. 2. Aeron. the portion of the wash of an aircraft that flows to the rear, usually created by the power plant. Cf. wash… …   Universalium

  • backwash — noun 1) a ship s backwash Syn: wake, wash, slipstream 2) the backwash of the Cuban missile crisis Syn: repercussions, reverberations, aftereffects, aftermath, fallout …   Thesaurus of popular words

  • backwash — back|wash [ˈbækwɔʃ US wo:ʃ, wa:ʃ] n [U] 1.) a backward flow of water, caused by an ↑oar, wave etc 2.) the bad situation that remains after something bad has happened ▪ the backwash of the company s failure …   Dictionary of contemporary English

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