a. (Chem.) Pertaining to, or designating, one of three metameric acids,
n. (Chem.) A complex double tolyl and toluidine derivative of glycocoll, obtained as a white crystalline substance. [ 1913 Webster ]
n. (Chem.) Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively
☞ It is used in the aniline dye industry, and constitutes the essential nucleus or radical of those dyes. [ 1913 Webster ]