Dictionary
hu•mec•tant
Pronunciation: (hyOO-mek'tunt or, often, yOO-), [key]—
n.
a substance that absorbs or helps another substance retain moisture, as glycerol.
—
adj.
1. moistening; diluting.
2. of or pertaining to a humectant or humectants.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.