What is Cumulative Evidence?

Legal Definition
This term is given to the additional evidence or the corroborating evidence for a certain point in a trial.
Legal Definition
Additional or corroborative evidence to the same point. That which goes to prove what has already been established by other evidence. Glidden v. Dunlap, 28 Me. 383; Parker v. Hardy, 24 Pick. (Mass.) 248; Waller v. Graves, 20 Conn. 310; Roe v. Kalb, 37 Ga. 459. All evidence material to the issue, after any such evidence has been given, is in a certain sense cumulative; that is, is added to what has been given before. It tends to sustain the issue. But cumulative evidence, in legal phrase, means evidence from the same or a new witness, simply repeating, in substance and effect, or adding to, what has been before testified to. Parshall v. Kiincia 43 Barb. (N. Y.) 212. Evidence is not cumulative merely because it tends to establish the same ultimate or principally controverted fact. Cumulative evidence is additional evidence of the same kind to the same point. Able v. Frazier, 43 Iowa, 177.
-- Black's Law Dictionary
Legal Definition
Such as tends to support the same fact before attempted to be proved. See 23 Mass. 417.
-- Ballentine's Law Dictionary