1725, "adhering close to the surface," from Latin sessilis "pertaining to sitting, for sitting on," from sessus, past participle of sedere "to sit" (from PIE root *sed- (1) "to sit"). In botany, of leaves, etc., "attached without any apparent projecting support," from 1753. Meaning "sedentary," of certain animals fixed to one spot, is recorded by 1860.
updated on June 12, 2022
Dictionary entries near sessile