subrogation

The substitution of one person or entity for another, especially when the substituted party becomes responsible for a debt or legal claim.

In law, the act or operation of law in vesting a person who has satisfied, or is ready to satisfy, a claim which ought to be borne by another with the right to hold and enforce the claim against such other for his own indemnification.

In a general sense, succession of any kind, whether of a person to a person, or of a person to a thing.

The act of subrogating.

The substitution of a different person in place of a creditor.

(law) the act of substituting of one creditor for another