ATOMIC NUMBER 61 as NOUN

1. Meaning
   • a soft silvery metallic element of the rare earth group having no stable isotope
   • was discovered in radioactive form as a fission product of uranium
   Synonym(s)
   • Pm (what does Pm mean?)
   • promethium (what does promethium mean?)
   Hypernyms(s) atomic number 61 is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • metallic element (what does metallic element mean?)
   • metal (what does metal mean?)