radiopromethium
English
Etymology
From radio- + promethium.
Noun
radiopromethium (uncountable)
- Radioactive promethium.
Usage notes
The radio- prefix is redundant as all isotopes of promethium are radioactive.
From radio- + promethium.
radiopromethium (uncountable)
The radio- prefix is redundant as all isotopes of promethium are radioactive.