noun

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

   “A mixture of horseradish and mustard often serves as a surrogate for wasabi.”

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

3. A deputy for a bishop in granting licences for marriage.

verb

1. To replace or substitute something with something else; to appoint a successor.

Synonyms: deputize, foster, replace, subrogate, substitute

adjective

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

noun

1. A unique identifier for an entity or object, not derived from application data.