linebreeding

[ lahyn-bree-ding ]
/ ˈlaɪnˌbri dɪŋ /

noun Genetics.

a form of inbreeding directed toward keeping the offspring closely related to a superior ancestor.

Origin of linebreeding

An Americanism dating back to 1875–80; line1 + breeding

British Dictionary definitions for line breeding

line breeding

noun

selective inbreeding that produces individuals possessing one or more of the favourable characteristics of their common ancestor