Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
prōmōtĭo, ōnis, f. [promoveo], advancement, preferment, promotion (post-class.), Lampr Anton. Diadum. 2; Firm. Math. 3, 7, 5; Ascon ad Cic. Verr. 2, 1, 28.