Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
exaggĕrātĭo, ōnis, f. [exaggero], a heaping or raising up. 
- * I.  Lit. concr., in plur., Just. 2, 1 fin. (al. aggerationes).
 
- II.  Trop., elevation, exaltation (very seldom); amplitudinem et quasi quandam exaggerationem quam altissimam animi, * Cic. Tusc. 2, 26, 64: aliqua speciosa orationis, cumulation, exaggeration, Gell. 13, 24, 9; cf. ib. § 16.