'Corroboratory' definitions:

Definition of 'corroboratory'

From: WordNet
adjective
Serving to support or corroborate; "collateral evidence" [syn: collateral, confirmative, confirming, confirmatory, corroborative, corroboratory, substantiating, substantiative, validating, validatory, verificatory, verifying]

Definition of 'Corroboratory'

From: GCIDE
  • Corroboratory \Cor*rob"o*ra*to*ry\ (-t?-r?), a. Tending to strengthen; corroborative; as, corroboratory facts. [1913 Webster]