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zygosis

[zahy-goh-sis, zi-]
noun Biology.
  1. the union of two gametes; conjugation.

Origin of zygosis

1875–80; < New Latin zygōsis < Greek zýgōsis a yoking. See zygote, -sis
Related formszy·gose [zahy-gohs, zig-ohs] /ˈzaɪ goʊs, ˈzɪg oʊs/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for zygosis

zygosis

noun
  1. biology another name for conjugation
Derived Formszygose (ˈzaɪɡəʊs, ˈzɪɡ-), adjective
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
zygosis in Medicine

zygosis

[zī-gō′sĭs, zĭ-]
n. pl. zy•go•ses (-sēz)
  1. The union of gametes to form a zygote; conjugation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.