Origin: 1350–1400; ME laxacion < L laxātiōn- (s. of laxātiō) a loosening, equiv. to laxāt(us) (ptp. of laxāre to loosen, deriv. of laxus;see lax) + -iōn--ion
Main Entry: lax·a·tion Pronunciation: lak-'sA-sh&n Function: noun : a bowel movement laxation does not occur after taking calomel —United States Dispensatory, 27th ed.>