Английский Этимологический словарь - summary (adj.)

- early 15c., from M.L. summarius "of or pertaining to the sum or substance," from L. summa "whole, gist" (see sum). Sense of "done promptly" is first found 1713. The noun is first recorded 1509, from L. summarium "an epitome, abstract, summary," from summa "totality, gist." Summarize first recorded 1871.