·noun The state of being incumbent; a lying or resting on something.
II. Incumbency ·noun That which is physically incumbent; that which lies as a burden; a weight.
III. Incumbency ·noun The state of holding a benefice; the full possession and exercise of any office.
IV. Incumbency ·noun That which is morally incumbent, or is imposed, as a rule, a duty, obligation, or responsibility.