self-cleaning

cleaning

[klee-ning]
noun
1.
an act or instance of making clean: Give the house a good cleaning.
2.
Slang. an overwhelming or complete defeat, financial loss, or failure: Our team took a cleaning in yesterday's game.
3.
Informal. killing ( def 3 ).

Origin:
1655–75; clean + -ing1

self-cleaning, adjective
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World English Dictionary
self-cleaning
 
adj
(of an oven, filter, etc) having a mechanism to clean itself

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

clean
O.E. clæne "clean, pure," from W.Gmc. *klainoz "clear, pure," from PIE base *gel- "to gleam" (cf. Gk. glene "eyeball," O.Ir. gel "bright"). As an adj., replaced in higher senses by clear, pure, but as a verb (c.1450) it has largely usurped what once belonged to
cleanse. The adj. clean in the sense of "innocent" is from c.1300; that of "not lewd" is from 1867; that of "free of drug addiction" is 1950s. To take (someone) to the cleaners "get all of (someone's) money" is from 1932
Online Etymology Dictionary, © 2010 Douglas Harper
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