exercĭtĭo, ōnis, f. [exerceo], practice, exercise, management, administration (anteand post-class., for the class. exercitatio): inertia plus detrimenti facit quam exercitio, Cato ap. Gell. 11, 2, 6: navium, Dig. 14, 1, 1, § 20: publici judicii exercitio, ib. 1, 21, 1 (al. exercitatio): publica, ib. 50, 16, 200 (al. exsecutio).