Sum, sum, n. the amount of two or more things taken together: the whole of anything: a quantity of money: a problem in arithmetic: chief points: substance or result of reasoning: summary: height: completion.—v.t. to collect into one amount or whole: to count: to bring into a few words:—pr.p. sum′ming; pa.t. and pa.p. summed.—adj. Sum′less, not to be summed or counted: incalculable.—ns. Sum′mer, one who sums; Sum′ming, the act of one who sums, arithmetic; Sum′ming-up, a recapitulation or review of the leading points, a judge's summary survey of the evidence given to a jury before it withdraws to consider its verdict; Sum′mist, one who makes a summary, esp. a theological compendium. [Fr.,—L. summasummus, supremus, highest, superl. of superus, on high—super, above.]

Sumac, Sumach, sū′mak, n. a genus of small trees and shrubs of the natural order Anacardiaceæ—the leaves of some species used in dyeing. [Fr. sumac—Sp. zumaque—Ar. summāq.]

Sumerian, sū-mē′ri-an, adj. pertaining to Sumir, one of the two divisions of ancient Babylonia.

Summary, sum′a-ri, adj. summed up or condensed: short: brief: compendious: done by a short method.—n. an abstract, abridgment, or compendium.—adv. Summ′arily.—n. Summ′ariness.—v.t. Summ′arise, to present in a summary or briefly.—ns. Summ′arist; one who summarises; Summ′ūla, a brief educational text-book.—Summary diligence (Scots law), the process by which execution may proceed without the need of further application to the court, in the case of bonds and other instruments registered for execution.

Summation, sum-ā′shun, n. act of summing or forming a total amount: an aggregate.—adjs. Summā′tional, Summ′ative.

Summer, sum′ėr, n. the second and warmest season of the year—June, July, August.—v.i. to pass the summer.—v.t. to keep through the summer.—adj. Summ′er-dried, dried by the heat of summer.—n. Summ′er-duck, a beautiful North American duck.—adj. Summ′er-fall′ow, lying fallow during the summer.—ns. Summ′er-house, a house in a garden used in summer: a summer residence; Summ′ering, a kind of early apple.—adv. Summ′er-like.—adj. Summ′erly, warm and bright like summer.—ns. Summ′er-shine, the summer colour of a bird, insect, &c.; Summ′er-tide, Summ′er-time, the summer season.—adj. Summ′ery, like summer.—Indian summer (see Indian); St Luke's, St Martin's, summer (see Saint). [A.S. sumer, sumor; Dut. zomer, Ger. sommer.]

Summer, sum′ėr, n. the first stone laid over columns or pilasters to form a cross vault: the central beam of a floor which receives the joists: any large piece of timber supported on two strong piers or posts, and serving as a lintel to a door, window, &c.; (obs.) a pack-horse, a sumpter-horse. [Sumpter.]

Summerset. Same as Somersault.

Summit, sum′it, n. the highest point or degree: the top.—adj. Summ′itless, having no summit or top.—n. Summ′it-lev′el, the highest level. [O. Fr. som, the top of a hill—L. summum, highest.]

Summon, sum′un, v.t. to call with authority: to command to appear, esp. in court: to rouse to exertion.—ns. Summ′oner; Summ′ons, a summoning or an authoritative call: a call to appear, esp. in court: a call to surrender.—v.t. to serve with a summons. [O. Fr. somoner—L. summonēresub, secretly, monēre, to warn.]