summation

summation
—summational, adj.
/seuh may"sheuhn/, n.
1. the act or process of summing.
2. the result of this; an aggregate or total.
3. a review or recapitulation of previously stated facts or statements, often with a final conclusion or conclusions drawn from them.
4. Law. the final arguments of opposing attorneys before a case goes to the jury.
5. Physiol. the arousal of impulses by a rapid succession of stimuli, carried either by separate sensory neurons (spatial summation) or by the same sensory neuron (temporal summation).
[1750-60; < ML summation- (s. of summatio), equiv. to summat(us) (ptp. of summare to SUM; see -ATE1) + -ion- -ION]

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      in physiology, the additive effect of several electrical impulses on a neuromuscular junction, the junction between a nerve cell and a muscle cell. Individually the stimuli cannot evoke a response, but collectively they can generate a response. Successive stimuli on one nerve are called temporal summation; the addition of simultaneous stimuli from several conducting fibres is called spatial summation.

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Universalium. 2010.

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  • summation — sum·ma·tion /sə mā shən/ n: closing argument Merriam Webster’s Dictionary of Law. Merriam Webster. 1996. summation …   Law dictionary

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  • Summation — Sum*ma tion, n. [Cf. F. sommation. See {Sum}, v. t.] The act of summing, or forming a sum, or total amount; also, an aggregate. [1913 Webster] Of this series no summation is possible to a finite intellect. De Quincey. [1913 Webster] …   The Collaborative International Dictionary of English

  • Summation — (lat.), Summierung, Ziehung der Summe, s. Addition …   Meyers Großes Konversations-Lexikon

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  • summation — 1760, from Mod.L. summationem (nom. summatio) an adding up, from L.L. summatus, pp. of summare to sum up, from L. summa (see SUM (Cf. sum)) …   Etymology dictionary

  • summation — ► NOUN 1) the process of adding things together. 2) the action of summing up. 3) a summary. DERIVATIVES summative adjective …   English terms dictionary

  • summation — [sə mā′shən] n. [ModL summatio] 1. the act or process of summing up, or of finding a total 2. a total or aggregate 3. the final summing up of arguments, as in a court trial or debate, before the decision is given …   English World dictionary

  • Summation — For evaluation of sums in closed form see evaluating sums. : Summation is also a term used to describe a process in synapse biology. Summation is the addition of a set of numbers; the result is their sum or total . The numbers to be summed may be …   Wikipedia

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