corroboration > define
noun
- Confirmation that some fact or statement is true through the use of documentary evidence.
- synonyms: documentation, certification
by WordNet 3.0 © 2006 by Princeton University
- (n.) That which corroborates.
- (n.) The act of corroborating, strengthening or confirming; addition of strength; confirmation; as, the corroboration of an argument or of information.
by Webster's Revised Unabridged Dictionary