Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atomic_number_104

1 sense of atomic number 104

Sense 1
rutherfordium, Rf, unnilquadium, Unq, element 104, atomic number 104 -- (a radioactive transuranic element which has been synthesized)
       => chemical element, element -- (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)