1 : the act or an instance of inflating something again … a chest tube is placed to allow for drainage of fluid from within the chest, which aids in full reinflation of the lung. —Carol V. Harvey Get a flat and you’re stuck with a can of goo and reinflation kit. —Chris Riley 2 : a renewed instance of economic inflation … when the danger of recession loomed larger than the peril of reinflation. —Preston Martin