|äˌlär|gän(ˌ)dō adjective (or adverb)
Etymology: Italian, making slow, widening, verbal of allargare to make slow, widen, from al- (from Latin ad- ) + largare to widen, from Late Latin, to widen, loosen, from Latin largus abundant, generous — more at lard
: becoming gradually broader with the same or greater volume — used as a direction in music