solid (subs.) Copy link Outline 1. sŏlĭdum corpus (strictly, a body of three dimensions, length, breadth, and thickness)2. sŏlĭdum (neut. absol. used as subs. • solid (subs.): 1. sŏlĭdum corpus (strictly, a body of three dimensions, length, breadth, and thickness): a s. is produced by the filling up of three dimensions, fit tribus dimensionibus impletis corpus s., Macr. Somn. Scip. 1, 5, ad med. 2. sŏlĭdum (neut. absol. used as subs.: a s., opp. a plane): v. solid (II. fin.): Cic.