† ˈsummatory, a. Obs. rare.
[ad. mod.L. summātōrius, f. med.L. summāt-: see summate and -ory.]
summatory arithmetic, summatory calculus: see quots.
| 1704 C. Hayes Treat. Fluxions 60 The fundamental Rule in Summatory Arithmetick, to find the Flowing Quantity of a given Fluxion. 1710 J. Harris Lex. Techn. II, Summatory Calculus, according to some, is the same with the Calculus Differentialis of Leibnitz; but more properly Summatory Arithmetick, is the Art of finding the flowing Quantity, from the Fluxion. |