radiolabel

verb (used with object), ra·di·o·la·beled, ra·di·o·la·bel·ing or (especially British) ra·di·o·la·belled, ra·di·o·la·bel·ling. Chemistry.

1. label(def 12).

v.

1. To tag a hormone, enzyme, or other substance with a radiotracer.

n.

1. A radiotracer.