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Webster 1913 Edition

Noun.

The act or process of whitening, by removing color or stains; esp. the process of whitening fabrics by chemical agents.

Ure.

Bleaching powder

a powder for bleaching, consisting of chloride of lime, or some other chemical or chemicals.

ppr.

Whitening; making white; becoming white.

Noun.

The act or art of whitening, especially cloth.

bleaching ‎(plural bleachings)

the process of removing stains or of whitening fabrics, especially by the use of chemical agents

bleaching