By means of a substitute; by proxy.

A woman who gives birth to a child not her own, with the intent to give that child up to at least one of the biological parents once it is born.

plural of surrogate father

A man who takes care of a child when one or more of the parents are unavailable (see also surrogate parent, foster parents).

plural of surrogate parent

A person who takes care of a child when the normal parents are unavailable.

plural of surrogate mother

plural of surrogate key

(databases) A unique identifier for an entity or object, not derived from application data.

The advertising of one product or service within an advertisement ostensibly for something else.