atomic number 60

Thesaurus

Noun

1.

atomic number 60 - a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymiumNd, neodymiummetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.bastnaesite, bastnasite - a yellow-to-brown mineral that is a source of rare earth elementsmonazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium