ēlŭvĭo — Lewis & Short
ēlŭvĭo, ōnis, f.id., older form of eluvies,
I a washing away, overflowing, inundation:
aquarum eluviones,Cic. Div. 1, 49, 111:
eluviones et exustiones terrarum,Cic. Rep. 6, 21, 23; id. Off. 2, 5, 16.