bleach
UK [bliːt͡ʃ] · US [blit͡ʃ] noun, verb, adjective
Forms bleaches bleaching bleached bleacher bleachest
- noun (uncountable) A chemical, such as sodium hypochlorite or hydrogen peroxide, or a preparation of such a chemical, used for disinfecting or whitening.
- noun (countable) A variety of bleach.
- verb (transitive) To treat with bleach, especially so as to whiten (fabric, paper, etc.) or lighten (hair).
- verb (intransitive) To be whitened or lightened (by the sun, for example).
- verb (intransitive, biology, of corals) To lose color due to stress-induced expulsion of symbiotic unicellular algae. “Once coral bleaching begins, corals tend to continue to bleach even if the stressor is removed.”
- verb (transitive, figurative) To make meaningless; to divest of meaning; to make empty. “semantically bleached words that have become illocutionary particles”
- noun An act of bleaching; exposure to the sun.
- adjective (archaic) Pale; bleak.
- noun (obsolete) A disease of the skin characterized by hypopigmentation and itching, believed in the 17th century to be a form of leprosy.
Synonyms
whitewash blanch bleaching agent blanching agent whitener bleach out decolor decolour decolorize decolourize decolorise decolourise discolorize discolourise discolorise
Etymology
From Middle English blechen, from Old English blǣċan (“to bleach, whiten”), from Proto-West Germanic *blaikijan, from Proto-Germanic *blaikijaną, from Proto-Indo-European *bʰel- (“to shine”).
Cognate with Dutch bleken (“to bleach”), German bleichen (“to bleach”), Danish blege, Swedish bleka (“to bleach”). Related to Old English blāc (“pale”) (English blake; compare also bleak).
From Middle English bleche, from Old English blǣċu, blǣċo (“paleness, pallor”), from Proto-Germanic *blaikį̄ (“paleness”). See Etymology 1 above.
From Middle English bleche (also bleke), from Old English blǣċ, blǣc, variants of blāc (“bright, shining, glittering”), from Proto-West Germanic *blaik, from Proto-Germanic *blaikaz (“pale, shining”). More at bleak.
From Middle English bleche, from Old English blǣċe (“irritation of the skin, leprosy; psoriasis”).
Webster’s 1913
- verb To make white, or whiter; to remove the color, or stains, from; to blanch; to whiten.
- verb To grow white or lose color; to whiten.
Etymology [OE. blakien, blechen, v. t. & v. i., AS. blacian, bl, to grow pale; akin to Icel. bleikja, Sw. bleka, Dan. blege, D. bleeken, G. bleichen, AS. blac pale. See Bleak, a.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “bleach”, CC BY-SA 4.0. Details