illuvial

[ ih-loo-vee-uhl, ih-loov-yuhl ]

adjective

1. of or relating to illuviation or illuvium.

Word History and Origins

Origin of illuvial¹

1920–25; < Latin illuvi ( ēs ) mud, flood, literally, what washes or is washed in ( il- il- ¹ + -luv-, combining form of lavere to wash + -iēs noun suffix) + -al ¹; alluvial