Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atomic_number_99

1 sense of atomic number 99

Sense 1
einsteinium, Es, E, atomic number 99 -- (a radioactive transuranic element produced by bombarding plutonium with neutrons)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)