Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. dēformātĭo, ōnis, f. [1. deformo], a representation, delineation, Vitr. 1, 1; 3, praef. fin.
* 2. dēformātĭo, ōnis, f. [2. deformo], a deforming, disfiguring, defacing: tantae majestatis, Liv. 9, 5 fin.: manus, Cod. Theod. 7, 13, 4; 15, 1, 19.