• (a.) Of, pertaining to, or containing, sulphur and arsenic; -- said of an acid which is the same as arsenic acid with the substitution of sulphur for oxygen.
Sul`pho·ar·sen'ic adjective (Chemistry) Of, pertaining to, or containing, sulphur and arsenic; -- said of an acid which is the same as arsenic acid with the substitution of sulphur for oxygen.