单词 | bleach |
释义 | bleach[ bleech ] / blitʃ / SEE SYNONYMS FOR bleach ON THESAURUS.COM verb (used with object)to make whiter or lighter in color, as by exposure to sunlight or a chemical agent; remove the color from. Photography. to convert (the silver image of a negative or print) to a silver halide, either to remove the image or to change its tone. verb (used without object)to become whiter or lighter in color. nouna bleaching agent. degree of paleness achieved in bleaching. an act of bleaching. Origin of bleachFirst recorded before 1050; Middle English blechen,Old English blǣcean, derivative of blāc “pale”; cognate with Old Norse bleikja,Old High German bleichēn synonym study for bleach1. See whiten. OTHER WORDS FROM bleachWords nearby bleachblazonry, bldg., Bldg.E., bldr., -ble, bleach, bleacher, bleacherite, bleachers, bleachery, bleaching powder Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for bleachBritish Dictionary definitions for bleachbleach / (bliːtʃ) / verbto make or become white or colourless, as by exposure to sunlight, by the action of chemical agents, etc nouna bleaching agent the degree of whiteness resulting from bleaching the act of bleaching Derived forms of bleachbleachable, adjectivebleacher, nounWord Origin for bleachOld English blǣcan; related to Old Norse bleikja, Old High German bleih pale Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for bleachbleach [ blēch ] A chemical agent used to whiten or remove color from textiles, paper, food, and other substances and materials. Chlorine, sodium hypochlorite, and hydrogen peroxide are bleaches. Bleaches remove color by oxidation or reduction. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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