
External evidence or evidence that is inadmissable or not properly before the court, jury, or other determining body.
Found on
http://www.lectlaw.com/def/e078.htm

Evidence relating to a contract but not contained in the written document, such as circumstances surrounding the agreement or statements made by the parties. This evidence may be admitted if the document's meaning is ambiguous. (See: parol evidence rule)
Found on
http://www.nolo.com/dictionary/extrinsic-evidence-term.html
No exact match found.