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excitation

[ek-sahy-tey-shuh n, -si-] /ˌɛk saɪˈteɪ ʃən, -sɪ-/
noun
1.
the act of exciting.
2.
the state of being excited.
3.
Electricity.
  1. the application of voltage to an electric device, as an electron-tube circuit, an antenna, or a dynamotor, often for producing a magnetic field in the device.
  2. the voltage applied.
4.
Physics. a process in which a molecule, atom, nucleus, or particle is excited.
5.
Also called drive. Electronics. the varying voltage applied to the control electrode of a vacuum tube.
Origin
1350-1400
1350-1400; Middle English excitacioun < Late Latin excitātiōn- (stem of excitātiō), equivalent to Latin excitāt(us) (past participle of excitāre; see excite) + -iōn- -ion
Related forms
preexcitation, noun
superexcitation, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ex-citation

excitation

/ˌɛksɪˈteɪʃən/
noun
1.
the act or process of exciting or state of being excited
2.
a means of exciting or cause of excitement
3.
  1. the current in a field coil of a generator, motor, etc, or the magnetizing current in a transformer
  2. (as modifier): an excitation current
4.
the action of a stimulus on an animal or plant organ, inducing it to respond
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ex-citation

excitation

n.

late 14c., from Old French excitation, from Latin excitationem (nominative excitatio), noun of action from past participle stem of excitare (see excite).

Online Etymology Dictionary, © 2010 Douglas Harper
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ex-citation in Medicine

excitation ex·ci·ta·tion (ěk'sī-tā'shən)
n.

  1. The act of increasing the rapidity or intensity of the physical or mental processes; stimulation.

  2. The complete, all-or-none response of a nerve or muscle to an adequate stimulus, ordinarily including propagation of excitation along the membranes of the cell or cells involved.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ex-citation in Science
excitation
  (ěk'sī-tā'shən)   
The activity produced in an organ, tissue, or cell of the body that is caused by stimulation, especially by a nerve or neuron. Compare inhibition.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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