shortfall shortfall /ˈʃɔrtˌfɔl/

noun

1. The property of being an amount by which something is less than expected or required  ( shortfall , deficit , shortage )
   the property of being an amount by which something is less than expected or required
    New blood vessels bud out from the already dilated vascular bed to make up the nutritional deficit
   new blood vessels bud out from the already dilated vascular bed to make up the nutritional deficit