Definition that contains lanthanide series
- ce a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
- cerium a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
- atomic number 70 a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
- rare earth any element of the lanthanide series (atomic numbers 57 through 71)
- lanthanide any element of the lanthanide series (atomic numbers 57 through 71)
- rare-earth element any element of the lanthanide series (atomic numbers 57 through 71)
- ytterbium a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
- lanthanoid any element of the lanthanide series (atomic numbers 57 through 71)
- yb a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
- atomic number 58 a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group