体质 Traditional form: 體質 Pinyin (reading): tǐzhì Definitions: (a person's) constitution; underlying physical condition; physical makeup (of an organization, society etc) structural soundness Characters: 体 - body; group, class; form, style, system 质 - essence, nature; material, substance Traditional characters: 體 - body; group, class; form, style, system 質 - essence, nature; material, substance