illuviationPronunciation: /ɪˌl(j)uːvɪˈeɪʃ(ə)n/Definition of illuviation noun [mass noun] Soil Science the introduction of salts or colloids into one soil horizon from another by percolating water. Derivatives illuvial adjective illuviated adjective Origin: early 20th century: from il- 'in' + -luvial (on the pattern of alluvial) + -ationilluviation in other Oxford dictionaries Definition of illuviation in the US English dictionary
