crossing-over

noun

cross·​ing-over ˌkrȯ-siŋ-ˈō-vər How to pronounce crossing-over (audio)
: an interchange of genes or segments between homologous chromosomes

Word History

First Known Use

1912, in the meaning defined above

Time Traveler
The first known use of crossing-over was in 1912

Dictionary Entries Near crossing-over

Cite this Entry

“Crossing-over.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crossing-over. Accessed 29 Mar. 2024.

Kids Definition

crossing-over

noun
cross·​ing-over
ˌkrȯ-siŋ-ˈō-vər
: an exchange of genes or chromosome segments between corresponding parts of similar but usually not identical chromosomes during meiosis

Medical Definition

crossing-over

noun
cross·​ing-over ˌkrȯ-siŋ-ˈō-vər How to pronounce crossing-over (audio)
: an interchange of genes or segments between homologous chromosomes
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!