Facts or information not embodied in a written agreement such as a will, trust, or contract.

Extrinsic evidence is similar to extraneous evidence, which is not furnished by the document in and of itself but is derived from external sources. In contract law, parol evidence is extrinsic evidence since it is not within a contract but, rather, is oral and outside the instrument.

See: parol evidence.

West's Encyclopedia of American Law. Copyright © 1998 by The Gale Group, Inc. All rights reserved.