What is Agent And Patient?

Legal Definition
This phrase is used to indicate the state of a person who is required to do a thing, and is at the same time the person to wbom it is done; as, when a man is indebted to another, and he appoints him his executor, the latter is required to pay the debt in his capacity of executor, and entitled to receive it in his own right, he is then agent and patient. Termes de la ley.
-- Bouviers Law Dictionary
Legal Definition
A phrase indicating the state of a person who is required to do a thing, and is at the same time the person to whom it is done.
-- Black's Law Dictionary
Legal Definition
One who does a thing and who suffers it to be done to him.
-- Ballentine's Law Dictionary