Lanthanide - Definition
lanthanide
n 1: any element of the lanthanide series (atomic numbers 57
through 71) [syn: rare earth, rare-earth element,
lanthanoid, lanthanide, lanthanon]
n 1: any element of the lanthanide series (atomic numbers 57
through 71) [syn: rare earth, rare-earth element,
lanthanoid, lanthanide, lanthanon]