[′krō·mē·əm ‚fif·tē′wən] (nuclear physics) A radioactive isotope with atomic mass 51 made by neutron bombardment of chromium; radiates gamma rays.
chromium-51
chromium-51
A radioactive isotope of chromium. The half-life is 27.7 days. Red blood cells are labeled with this isotope in order to study their length of life in the body.