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karyogamy

American  
[kar-ee-og-uh-mee] / ˌkær iˈɒg ə mi /

noun

Cell Biology.

  1. the fusion of the nuclei of cells, as in fertilization.

karyogamy British  
/ ˌkærɪˈɒɡəmɪ, ˌkærɪəˈɡæmɪk /

noun

  1. biology the fusion of two gametic nuclei during fertilization

"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

Other Word Forms

  • karyogamic adjective

Etymology

Origin of karyogamy

First recorded in 1890–95; karyo- + -gamy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In each ascus, two or more haploid ascospores fuse their nuclei in karyogamy.

From Textbooks • Jan. 1, 2015

A haploid zygote that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores.

From Textbooks • Jan. 1, 2015

A diploid ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores.

From Textbooks • Jan. 1, 2015

A dikaryotic ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores.

From Textbooks • Jan. 1, 2015

The basidia undergo karyogamy to form a 2n zygote.

From Textbooks • Jan. 1, 2015

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.