tropology

from The Collaborative International Dictionary of English v.0.48

Tropology \Tro*pol"o*gy\, n. [Gr. ?; ? a trope + ? discourse:
   cf. F. tropologie.]
   A rhetorical mode of speech, including tropes, or changes
   from the original import of the word. --Sir T. Browne.
   [1913 Webster]