1. a crystalline metallic element not found in nature; occurs as one of the fission products of uranium; [syn: technetium, Tc, atomic number 43]
WordNet (r) 3.0 (2006):
atomic number 43
n 1: a crystalline metallic element not found in nature; occurs
as one of the fission products of uranium [syn:
technetium, Tc, atomic number 43]