- the radioactive cesium isotope with mass number 137 and a half-life of 33 years: used for gamma irradiation of certain foods and for radiation therapy.
Examples from the Web for cesium 137
Contemporary Examples of cesium 137
Of particular concern: cesium-137 in the pool, at levels Alvarez estimates at 20 million to 50 million curies.The Japan Nuke Problem No One's Talking About
March 14, 2011
Historical Examples of cesium 137
It was established that strontium-90 and cesium-137, important in fallout on land, enter the marine cycles only in minute amounts.Atoms, Nature, and Man
Neal O. Hines