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pulsation

[puhl-sey-shuh n] /pʌlˈseɪ ʃən/
noun
1.
the act of pulsating; beating or throbbing.
2.
a beat or throb, as of the pulse.
3.
vibration or undulation.
4.
a single vibration.
Origin
late Middle English
1375-1425
1375-1425; late Middle English pulsacioun < Latin pulsātiōn- (stem of pulsātiō). See pulsate, -ion
Related forms
nonpulsation, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for pulsations

pulsation

n.

early 15c., from Middle French pulsation (14c.) and directly from Latin pulsationem (nominative pulsatio) "a beating or striking," noun of action from past participle stem of pulsare "to beat, strike, push against' hammer, keep hitting," figuratively "drive forth, disturb, disquiet," frequentative of pellere (past participle pulsus) "to beat, strike" (see pulse (n.1)).

Online Etymology Dictionary, © 2010 Douglas Harper
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pulsations in Medicine

pulsation pul·sa·tion (pŭl-sā'shən)
n.

  1. The act of pulsating.

  2. A single beat, throb, or vibration.

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