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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.

A haploid zygote 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

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

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

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.