Source : Webster's Revised Unabridged Dictionary (1913)

Toponomy \To*pon"o*my\, n. [Gr. ? place + ? to distribute.]
   The designation of position and direction. --B. G. Wilder.

Source : WordNet®

toponomy
     n 1: the nomenclature of regional anatomy [syn: {toponymy}]
     2: the branch of lexicology that studies the place names of a
        region or a language [syn: {toponymy}]