Main Entry: blot

Pronunciation: \ˈblät\

Function: noun

: a nitrocellulose sheet that contains spots of immobilized macromolecules (as of DNA, RNA, or protein) or their fragments and that is used to identify specific components of the spots by applying a suitable molecular probe (as a complementary nucleic acid or a radiolabeled antibody)—see northern blot, southern blot, western blot

—blot transitive verb