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asynapsis

[ey-si-nap-sis]
noun, plural a·syn·ap·ses [ey-si-nap-seez] /ˌeɪ sɪˈnæp siz/. Genetics.
  1. failure of the pairing of homologous chromosomes during meiosis.
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Origin of asynapsis

First recorded in 1925–30; a-6 + synapsis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for asynapsis

asynapsis

noun
  1. biology failure of pairing of chromosomes at meiosis
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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