(1):

(a.) Characterized by, or requiring, much sitting; as, a sedentary employment; a sedentary life.

(2):

(a.) Inactive; motionless; sluggish; hence, calm; tranquil.

(3):

(a.) Caused by long sitting.

(4):

(a.) Remaining in one place, especially when firmly attached to some object; as, the oyster is a sedentary mollusk; the barnacles are sedentary crustaceans.

(5):

(a.) Accustomed to sit much or long; as, a sedentary man.