from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The metallic element technetium.
Then it became apparent that there was no valid evidence for the claimed existence of stable element 43, called masurium by its apparently deluded discoverer, nor for element 61, called illinium.
From the chemical evidence, the two short periods (10 sec. and 40 sec.) so far ascribed to 239U might be masurium isotopes (Z = 43) decaying through ruthenium, rhodium, palladium and silver into cadmium.