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 ]

backwash

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 ]

WordNet (3.0)

aftermath	(n) the consequences of an event (especially a catastrophic event), Syn. backwash, wake, Example: the aftermath of war; in the wake of the accident no one knew how many had been injured
slipstream	(n) the flow of air that is driven backwards by an aircraft propeller, Syn. wash, airstream, backwash, race
wake	(n) the wave that spreads behind a boat as it moves forward, Syn. backwash, Example: the motorboat's wake capsized the canoe

EDICT JP-EN Dictionary

引き波;引波

[ひきなみ, hikinami] (n) (1) (See 寄せ波) backwash; rip current; undertow; (2) stern wave; (3) (See 押し波) drawback (of a tsunami, i.e. when a wave trough reaches land before a crest) [Add to Longdo]

DING DE-EN Dictionary

Kielwasser { n }	backwash; wake [Add to Longdo]
Rückspülfilter { m }	backwashing filter [Add to Longdo]
Rückspülung { f }	backwashing [Add to Longdo]

Time: 0.0169 seconds, cache age: 24.806 (clear)Longdo Dict -- https://dict.longdo.com/