Definition of "surrogate"

A substitute (usually of a person, position or role).  examples

A person or animal that acts as a substitute for the social or pastoral role of another, such as a surrogate parent.  examples

(chiefly Britain) A deputy for a bishop in granting licences for marriage.  examples

(US, politics) A politician or person of influence campaigning for a presidential candidate.  examples

(US law) A judicial officer of limited jurisdiction, who administers matters of probate and intestate succession and, in some cases, adoptions.  examples

(computing) Any of a range of Unicode codepoints which are used in pairs in UTF-16 to represent characters beyond the Basic Multilingual Plane.  examples

(economics) An ersatz good.  examples

(databases) Ellipsis of surrogate key.  examples

Of, concerning, relating to or acting as a substitute.  examples

(transitive) To replace or substitute something with something else; to appoint a successor.  examples