̷ ̷ˌ ̷ ̷.trēˈāshən noun
( -s )
Etymology: Latin elutriat us + English -ion
1. : the removal of substances from a mixture by washing and decanting
the elutriation of liquid sludge
2. : the separation of finer lighter particles from coarser heavier particles in a mixture by means of a usually slow upward stream of fluid so that the lighter particles are carried upward
3. : the washing away of the lighter or finer particles (as of humus or clay) in a soil especially by the splashing of raindrops