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[si-nap-sis] /sɪˈnæp sɪs/
noun, plural synapses
[si-nap-seez] /sɪˈnæp siz/ (Show IPA)
Also called syndesis. Cell Biology. the pairing of homologous chromosomes, one from each parent, during early meiosis.
Physiology. synapse.
Origin of synapsis
1645-55; < New Latin < Greek sýnapsis junction, equivalent to synap- (stem of synáptein to make contact, equivalent to syn- syn- + (h)áptein to touch) + -sis -sis
Related forms
[si-nap-tik] /sɪˈnæp tɪk/ (Show IPA),
synaptical, adjective
synaptically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for synapsis


noun (pl) -ses (-siːz)
(cytology) the association in pairs of homologous chromosomes at the start of meiosis
another word for synapse
Word Origin
C19: from New Latin, from Greek sunapsis junction, from sunaptein to join together, from syn- + haptein to connect
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 synapsis

plural synapses, 1895 in biology, Modern Latin, from Greek synapsis "connection, junction" (see synapse).

Online Etymology Dictionary, © 2010 Douglas Harper
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synapsis in Medicine

synapsis syn·ap·sis (sĭ-nāp'sĭs)
n. pl. syn·ap·ses (-sēz)
The side-by-side association of homologous paternal and maternal chromosomes during early meiotic prophase.

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