Nolo's Plain-English Law Dictionary

Evidentiary

(1) Constituting evidence or having the quality of evidence. For example, someone's statement at the scene of a car wreck that one of the drivers was speeding has evidentiary value because it says something about how the accident happened. (2) Something that relates to the evidence in a particular case. For example, if a judge holds a hearing to decide whether or not a particular piece of evidence can be admitted at trial, that hearing might be called an evidentiary hearing.
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