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humectant

hu·mec·tant

humectant

 
pronunciation:
hyu mek tnt
parts of speech:
noun, adjective
part of speech: noun
definition: a substance, such as glycerol, that holds moisture or, in combination, helps other substances to do so.
 
part of speech: adjective
definition: of or related to a humectant or humectants; moisture-retaining.