artĭfĭcĭālis, e, adj. [artificium],
of or belonging to art , artificial , according to the rules of art (perh. only in Quint.): probationes, Quint. 5, 1, 1; so id. 5, 9, 1; 12, 8, 19: ratio, id. 6, 4, 4.—Once subst.: artĭfĭ-cĭālia , ium, n., things conformable to the rules of art , Quint. 1, 8, 14.—Adv.: artĭ-fĭcĭālĭter , according to art (opp. inartificialiter): se gerere, Quint. 2, 17, 42.