Substituted \Sub"stit"uted\, a. 1. Exchanged; put in the place of another. 2. (Chem.) Containing substitutions or replacements; having been subjected to the process of substitution, or having some of its parts replaced; as, alcohol is a substituted water; methyl amine is a substituted ammonia. {Substituted executor} (Law), an executor appointed to act in place of one removed or resigned.