|rādē(ˌ)ō+ noun
Etymology: International Scientific Vocabulary radio- + element
: a radioactive element whether formed naturally or produced artificially — compare radioisotope
|rādē(ˌ)ō+ noun
Etymology: International Scientific Vocabulary radio- + element
: a radioactive element whether formed naturally or produced artificially — compare radioisotope
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012