Indictio, onis, fee. gen, Verbale. Ascon. A taxe or tallage sette on the people.In quos libera est indictio. Bud. Which may be taxed.
Lewis and Short: Latin dictionary
indictĭo, ōnis, f. [id.], a declaration (post-Aug.). I. In gen.: belli, Flor. 4, 10, 2; Paul. ex Fest. p. 254, 34.— II. In partic. A.A declaration or imposition of a tax; an impost, tax, Plin. Pan. 29; Dig. 33, 2, 28.—B.A space of fifteen years, Cod.Th. 11, 28, 3: SECVNDA, Inscr. Orell. 1160.