isolate

²iso·late

noun \ˈī-sə-lət, -ˌlāt\

Definition of ISOLATE

1

: an individual (as a spore or single organism), a viable part of an organism (as a cell), or a strain that has been isolated (as from diseased tissue, contaminated water, or the air); also : a pure culture produced from such an isolate

2

: a relatively homogeneous population separated from related populations by geographic, biologic, or social factors or by human intervention

3

: a socially withdrawn individual