Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ĭtĭo, ōnis, f. [eo], a going, walking, travelling: itiones crebrae, Ter. Phorm. 5, 8, 23: de obviam itione ita faciam, ut suades, Cic. Att. 11, 16, 1: quaeris quod cogitem de obviam itione, id. ib. 13, 50, 4: reditum ac domum itionem dari, id. Div. 1, 32, 68.