spatial-summation

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summation

[suh-mey-shuhn]
noun
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.
Physiology. 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)

Origin:
1750–60; < Medieval Latin summātiōn- (stem of summātiō), equivalent to summāt(us) (past participle of summāre to sum; see -ate1) + -iōn- -ion

summational, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
summation (sʌˈmeɪʃən)
 
n
1.  the act or process of determining a sum; addition
2.  the result of such an act or process
3.  a summary
4.  (US) law the concluding statements made by opposing counsel in a case before a court
 
[C18: from Medieval Latin summātiō, from summāre to total, from Latin summasum1]
 
sum'mational
 
adj
 
'summative
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

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).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

summation sum·ma·tion (sə-mā'shən)
n.
The process by which multiple or repeated stimuli can produce a response in a nerve, muscle, or other part that one stimulus alone cannot produce.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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