Meaning of onomasiology

on•o•ma•si•ol•o•gy

Pronunciation: (on"u-mā"sē-ol'u-jē, -mā"zē-), [key]
— n.
  1. the study of the means of expressing a given concept.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.