/lak say"sheuhn/ , n.
1. a loosening or relaxing.
2. the state of being loosened or relaxed.
3. a bowel movement.
[ 1350-1400; ME laxacion laxation- (s. of laxatio ) a loosening, equiv. to laxat ( us ) (ptp. of laxare to loosen, deriv. of laxus; see LAX) + -ion- -ION ]