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humectant

[hyoo-mek-tuh nt or, often, yoo-] /hyuˈmɛk tənt or, often, yu-/
noun
1.
a substance that absorbs or helps another substance retain moisture, as glycerol.
adjective
2.
moistening; diluting.
3.
of or pertaining to a humectant or humectants.
Origin
1650-1660
1650-60; < Latin hūmectant- (stem of (h)ūmectāns), present participle of (h)ūmectāre to moisten, equivalent to (h)ūmect(us) moist, damp (see humid) + -ant- -ant
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for more humectant

humectant

/hjuːˈmɛktənt/
adjective
1.
producing moisture
noun
2.
a substance added to another substance to keep it moist
Word Origin
C17: from Latin ūmectāre to wet, from ūmēre to be moist, from ūmor moisture; see humour
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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