Testimony, in legal as well as in common use, signifies the statements of witnesses. Deposition and affidavit denote testimony reduced to writing; the more..Testimony, in legal as well as in common use, signifies the statements of witnesses. Deposition and affidavit denote testimony reduced to writing; the deposition differs from the affidavit in that the latter is voluntary and without cross-examination, while the former is made under interrogatories and subject to cross-examination. Evidence is a broader term, including the testimony of witnesses and all facts of every kind that tend to prove a thing true; we have the testimony of a traveler that a fugitive passed this way; his footprints in the sand are additional evidence of the fact. Compare DEMONSTRATION; OATH.(noun)