n. 1 (often foll. by for, towards) goodwill; fond or kindly feeling. 2 a disease; a diseased condition. 3 a mental state; an emotion. 4 a mental disposition. 5 the act or process of affecting or being affected. affectional adj. (in sense 3). affectionally adv.
[ ME f. OF f. L affectio -onis (as AFFECT(1)) ]