elutriate
vt.
3at#ed, 3at#ing 5< L elutriatus, pp. of elutriare, to wash out, rack off < eluere < e3, out + luere, var. of lavare, to LAVE16 to purify (an insoluble powder) by washing and straining or by decanting
e[lu#tri[a4tion
n.