radioactive tracer(redirected from Radioactive label)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial.
Related to Radioactive label: Radioactive tracer, radiotracer
radioactive tracer[¦rād·ē·ō′ak·tiv ′trā·sər]
A radioactive isotope which, when attached to a chemically similar substance or injected into a biological or physical system, can be traced by radiation detection devices, permitting determination of the distribution or location of the substance to which it is attached. Also known as radiotracer.