subline

noun

sub·​line ˈsəb-ˌlīn 

: an inbred or selectively cultured line (as of cells) within a strain

Word History

First Known Use

1942, in the meaning defined above

Medical Definition

subline

noun

sub·​line ˈsəb-ˌlīn 

: an inbred or selectively cultured line (as of cells) within a strain