1. wrap up, cover, or surround completely: "a figure enveloped in a black cloak"
▪ (of troops) surround (an enemy force):"their assignment was to envelop the head of the enemy column and destroy it"
Word Originlate Middle English (formerly also as invelop(e)): from Old French envoluper, from en- ‘in’ + a second element (also found in develop) of unknown origin.