Sessility, or sessile, may refer to:
Sessility (motility), organisms which are not able to move about Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant Sessility (medicine), tumors and polyps that lack a stalk Sessility (in crystallography), dislocation that is not able to move in the slip plane (as opposed to glissile)
See also Sedentism, in cultural anthropology, the practice of living in one place for a long time Sedentary lifestyle, a type of lifestyle involving little or no physical activity