Intellectualis, le. Belonging to vnderstanding.Intelligibile.That may be vnderstanded.
Lewis and Short: Latin dictionary
intellectŭālis, e, adj. [2. intellectus], of or relating to the understanding, intellectual, App. Dogm. Plat. p. 3, 1; Aug. de Gen. ad Lit. 12, 7.— Adv.: intellectŭā-lĭter, intellectually, Claud. Mam. Stat. An. 2, 5.