Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† dysentĕrĭa, ae, f., = δυσεντερία, a flux, dysentery, Plin. 26, 8, 28, § 45; 28, 9, 33, § 128; Cael. Aur. Tard. 4, 6, 84 sq.; Vulg. Act. 28, 8 (in Cels. 4, 15; and Cic. Fam. 7, 26, written as Greek).