lanthanum : Definition, Usages, News and More
- n a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
- Now Chu's team tried lanthanum, the rare-earth component of the IBM compound.
- They have tongue-twisting names (praseodymium, gadolinium, cerium, lanthanum, ytterbium, etc.
- It is compounded of three rare metals: tantalum, tungsten, lanthanum.