Lat. Burning; raging; in actual perpetration. Flagrans helium. A war actually going on. Flagrans crimen. In Roman law. A fresh or recent crime. This term designated a crime in the very act of its commission, or while it was of recent occurrence. Flagrante hello. During an actual state of war. Flagrante delloto. In the very act of committing the crime. 4 Bl. Comm. 307.