Definitions for illuviationɪˌlu viˈeɪ ʃən
Random House Webster's College Dictionary
il•lu•vi•a•tionɪˌlu viˈeɪ ʃən(n.)
the accumulation in one layer of soil of materials that have been leached out of another layer.
Category: Agriculture, Geology
Origin of illuviation:
The accumulation of suspended material and soluble compounds leached from an overlying stratum