Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praedĭŏlum, i, n. dim. [praedium], a small farm or estate, Cic. de Or. 3, 27, 108; id. Att. 16, 34; id. Fam. 2, 15; 2, 6, 7; Plin. Ep. 1, 24, 4.