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[kroh-nak-see, kron-ak-] /ˈkroʊ næk si, ˈkrɒn æk-/
noun, Physiology
the minimum time that an electric current of twice the threshold strength must flow in order to excite a tissue.
Also, chronaxy.
Origin of chronaxie
1915-20; < French, equivalent to chron- chron- + -axie < Greek axía worth, value Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for chronaxy


(physiol) the minimum time required for excitation of a nerve or muscle when the stimulus is double the minimum (threshold) necessary to elicit a basic response Compare rheobase
Word Origin
C20: from French, from chrono- + Greek axia worth, from axios worthy, of equal weight
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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chronaxy in Medicine

chronaxie chro·nax·ie or chro·nax·y (krō'nāk'sē, krŏn'āk'-)
n. pl. chro·nax·ies
The minimum interval of time necessary to electrically stimulate a muscle or nerve fiber, using twice the minimum current needed to elicit a threshold response.

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