simple past tense and past participle of backwash

(nautical) The backward flow of water from oars or propeller or breaking waves. / The similar flow of air from an aircraft engine. / The result or consequence of an event; an aftermath.

To operate a water filter in the reverse direction in order to clean it. / (transitive) To affect with backwash. / To clean the oil from wool after combing.

plural of backwash

plural of backwashing

plural of backwasher

A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air.

(textiles) A machine used for washing wool after carding to remove the impurities.

(medicine) ileitis that occurs in the setting of pancolitis and tends to correlate with the activity of colitis