Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dispensātor, ōris, m. [dispenso], a household superintendent, a manager, steward; as manager of the imperial treasury, a cashier, treasurer, διοικητής; usually the most trustworthy slaves, but under the emperors sometimes ingenui (v. Orell. on his Inscr. 4002): ab aere pendendo dispensator, Varr. L. L. 5, § 183 Müll.; Plin. 33, 3, 13, § 43; and Paul. ex Fest. p. 72, 9 Müll.: dispensator litteras scit, Cic. Rep. 5, 3, 5 (cf. Krebs, Antibar. p. 371); so id. Fragm. ap. Non. 193, 10; Juv. 1, 91; Suet. Aug. 67; Mart. 5, 42, 5; Plin. 7, 39, 40, § 129; Inscr. Orell. 790; 895; 2914 sq.; Vulg. Gen. 43, 16 al.