saturant noun 2adjective 1forms 3 noun2 •A substance which is used to saturate another. •An antacid, such as magnesia, used to reduce stomach acidity. adjective1 •Impregnating to the full; saturating.It is a world of seizing visual beauty, of shimmering whites and yellows that shift to glowing apricot, pink and violet with the sinking of the saturant sun. — 1977 formssaturants · more saturant · most saturant