| / English Dictionary |
ATOMIC NUMBER 99
I. (noun)
Sense 1
Meaning:
A radioactive transuranic element produced by bombarding plutonium with neutrons
Synonyms:
atomic number 99; E; einsteinium; Es
Classified under:
Hypernyms ("atomic number 99" is a kind of...):
metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)
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