(1):

(a.) Receiving or enduring without either active sympathy or active resistance; without emotion or excitement; patient; not opposing; unresisting; as, passive obedience; passive submission.

(2):

(a.) Inactive; inert; not showing strong affinity; as, red phosphorus is comparatively passive.

(3):

(a.) Not active, but acted upon; suffering or receiving impressions or influences; as, they were passive spectators, not actors in the scene.

(4):

(a.) Designating certain morbid conditions, as hemorrhage or dropsy, characterized by relaxation of the vessels and tissues, with deficient vitality and lack of reaction in the affected tissues.