a. [ L. saturans, p. pr. See Saturate. ] Impregnating to the full; saturating. [ 1913 Webster ]
n. 1. (Chem.) A substance used to neutralize or saturate the affinity of another substance. [ 1913 Webster ]
2. (Med.) An antacid, as magnesia, used to correct acidity of the stomach. [ 1913 Webster ]