WordReference Random House Unabridged Dictionary of American English © 2025
il•lu•vi•al
(i lo̅o̅′vē əl, i lo̅o̅v′yəl),USA pronunciation adj.
- Agriculture, Geologyof or pertaining to illuviation or illuvium.
- Latin illuvi(ēs) mud, flood, literally, what washes or is washed in (il- il-1 + -luv-, combining form of lavere to wash + -iēs noun, nominal suffix) + -al1; see alluvial
- 1920–25
'illuvial' also found in these entries (note: many are not synonyms or translations):