interior (subs.) Copy link • interior (subs.): expr. by intĕrior, internus: the i. of a house, pars interior aedium, Cic. Sext. 10, 24; domus interior Virg. Aen. 1, 637: the i. of the world, interna (interiora, v. preced. art., mundi, Plin. 2, 1, 1, § 4. See also inland.