- a uniform strain of organisms that is relatively pure genetically because of continued inbreeding and artificial selection.
Origin of pure line
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pure line
Thus, it is not difficult to breed to practically a pure-line condition.The Tomato
- a breed or strain of animals or plants in which certain characters appear in successive generations as a result of inbreeding or self-fertilization