Evidence of incidental facts that would otherwise be inadmissible in a trial as irrelevant or hearsay but that is admitted because it helps explain and give context to a more central evidentiary fact.
Facts that are so closely connected with the occurrence in question as to be considered a part of it, and are thus admissible as evidence.
Things done. Either the events at issue or other things, such as utterances, that are contemporaneous with the res gestae; spontaneous statements or exclamations made by the participants, perpetrators, victims, or onlookers at or immediately following the event, be it criminal or the subject of litigation. As present-sense impressions, they are excluded from the hearsay rule. See excited utterance.
Origin of res-gestae
Latin rēs gestaerēspl. ofrēsthinggestaefeminine pl. past participle ofgerereto carry, show
American Heritage Dictionary of the English Language, 5th Edition
Res-gestae Sentence Examples
For the earlier part he used Widukind's Res gestae Saxonicae, the Annales Quedlinburgenses and other sources; the latter part is the result of personal knowledge.
See the contemporary life by Vitorelli, continuator of Ciaconius, Vitae et res gestae summorum pontiff.
On the walls of the temple is engraved the famous Monumentum Ancyranum, a long inscription in Latin and Greek describing the Res gestae divi Augusti; the Latin portion being inscribed on the inner left-hand wall of the pronaos, the Greek on the outside wall of the naos (cella).