promethium

 : 
Noun
 : 
pro=me=thi=um

WORDNET DICTIONARY

Noun promethium has 1 sense

OXFORD DICTIONARY

promethium, n. Chem. a radioactive metallic element of the lanthanide series occurring in nuclear-waste material.

Usage
Symb.: Pm.
Etymology
Prometheus: see PROMETHEAN

For further exploring for "promethium" in Webster Dictionary Online


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