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synaptic cleft

noun, Physiology.
the small gap, measured in nanometers, between an axon terminal and any of the cell membranes in the immediate vicinity.
Origin of synaptic cleft
First recorded in 1975-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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synaptic cleft in Medicine

synaptic cleft n.
See synaptic gap.

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