radiolead

ra·di·o·lead

(rā'dē-ō-led'),
A radioactive isotope of lead, usually 210Pb. See: lead.

radioactive lead

Any of the radioactive isotopes of lead, which are part of the natural decay chain of 238U: 218Po is an alpha emitter with a half-life of 3.1 minutes; this becomes 214Pb, a beta emitter with a half-life of 27 minutes; this becomes 214Bi, another beta emitter, which has a half-life of 20 minutes; this becomes 214Po, an alpha emitter with a half-life of 160 microseconds; this becomes 210Pb, a beta emitter with a half-life of 22 years; this becomes 210Bi, another beta emitter, which has a half-life of 5 days; this becomes 210Po, an alpha emitter with a half-life of 140 days; finally ending in 206Pb, a stable nuclide.

radiolead

(rā″dē-ō-lĕd′)
A radioactive isotope of lead.