Obs. rare–1. [ad. L. excōlātiōn-em, n. of action f. excōlāre to strain out, f. ex- out + cōlāre to filter.] The action of filtering or straining out.
1578. Banister, Hist. Man, V. 82 b. A certaine worke made in the reynes to the excretion or excolation of Urine.
