inbreeding

noun

in·​breed·​ing ˈin-ˈbrē-diŋ 

1

: the interbreeding of closely related individuals especially to preserve and fix desirable characters of and to eliminate unfavorable characters from a stock

2

: confinement to a narrow range or a local or limited field of choice

Examples of inbreeding in a Sentence

genetic defects caused by inbreeding

Recent Examples on the Web

The population size, as well as inbreeding level and genetic diversity, remained stable for the next 6,000 years until their extinction. —Jeanne Timmons, Ars Technica, 29 June 2024

Their risk of accidental inbreeding is real: In 2021, The New York Times reported some of Meijer’s offspring had come across one another on the dating app Tinder. —Elizabeth Chuck, NBC News, 9 July 2024

Unlike the initial population bottleneck, genomic signatures over time seem to indicate inbreeding eventually shifted to pairings of more distant relatives, suggesting either a larger mammoth population or a change in behavior. —Jeanne Timmons, Ars Technica, 29 June 2024

That inbreeding also boosted the purging of harmful mutations. —Jeanne Timmons, Ars Technica, 29 June 2024

Word History

First Known Use

circa 1842, in the meaning defined at sense 1

Kids Definition

inbreeding

noun

in·​breed·​ing

ˈin-ˌbrēd-iŋ

: the interbreeding of closely related individuals especially to preserve desirable characteristics and eliminate undesirable characteristics from a stock

Medical Definition

inbreeding

noun

in·​breed·​ing ˈin-ˈbrēd-iŋ 

: the interbreeding of closely related individuals especially to preserve and fix desirable characters of and to eliminate unfavorable characters from a stock compare linebreeding, outbreeding