Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
praemĕdĭtātĭo, ōnis, f. [praemeditor], a considering beforehand, premeditation (used by Cic.): futurorum malorum, Cic. Tusc. 3, 14, 29: diuturna, id. ib. 3, 15, 31: futuri regni, Hier. in Matt. 3, 17, v. 9.