sum

Definitions

General English

Accounting

  • noun a quantity of money
  • noun the total of a series of figures added together

Aviation

  • noun the result of two or more numbers added together

Banking

  • noun a unit of currency used in Uzbekistan

Computing

  • noun total of a number of items added together

Origin & History of “sum”

Latin summus meant ‘highest’ (a meaning preserved in English summit (15th c.), which is ultimately derived from it); it evolved from an earlier *supmus, a superlative form based on the stem of Latin super ‘above’ (source of English super). when the Romans counted up columns of figures they worked from the bottom upwards, and put the total on top – whence the use of the expression rēs summa, literally ‘highest thing’, for ‘total’. this was eventually shortened to summa, which reached English via Old French summe. other derivatives in English include consummate (15th c.) and summary (15th c.).
http://www.dictionarycentral.com/definition/sum.html