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Linking two neurons in a neuronal pathway.

in′ter·nun′cial·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Physiology) physiol (esp of neurons) interconnecting. See internode
2. (Roman Catholic Church) of, relating to, or emanating from a papal internuncio
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɪn tərˈnʌn ʃəl)

serving to connect sensory and motor nerve cells.
[1835–45; < Latin internūnti(us) intermediary + -al1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Monosynaptic reflexes: fiber axon synapses directly associated with medullary moto-neuron without interposition of intercalary neurons. The route of transmission is high speed driving and short latency time (in milliseconds 1-2) are strictly limited and does not irradiate (increasing the intensity of the stimulus is therefore only produce a stronger reflex contractions).