Noun: subtotal  ,súb'tow-tul

1. The sum of part of a group of numbers
   "The subtotal of the expenses before tax came to $500"

Verb: subtotal (subtotalled,subtotalling, or [US] subtotaled,subtotaling)  ,súb'tow-tul

1. To add up a group of numbers, to be part of a larger total
   "Please subtotal the expenses for each department"

Derived forms: subtotalling, subtotals, subtotaled, subtotalled, subtotaling

Type of: amount, sum, total