Origin of lanthanum
Examples from the Web for lanthanum
Not to mention rare elements such as lanthanum, cerium, and neodymium, essential to modern technology and commanding high prices.Afghanistan’s Mineral Wealth Could Be a Bonanza—or Lead to Disaster|Dr. Cheryl Benard|July 4, 2012|DAILY BEAST
Lanthanum, lan′tha-num, n. a metal discovered in 1839 in cerite, a hydrated silicate of cerium.
Didymium, a rare metallic element, occurring along with lanthanum in the mineral cerite as discovered by Mosander in 1842.The New Gresham Encyclopedia|Various
During an absence of several days, the inventor left a mantle of lanthanum oxide locked up in his laboratory.Inventors at Work|George Iles
Lanthanum sulphide, La2S3, is a yellow powder, obtained when the oxide is heated in the vapour of carbon bisulphide.
British Dictionary definitions for lanthanum
Word Origin for lanthanum
Word Origin and History for lanthanum
metallic rare earth element, 1841, coined in Modern Latin by Swedish chemist and mineralogist Carl Gustav Mosander (1797-1858), who discovered it in 1839, from Greek lanthanein "to lie hidden, escape notice," from PIE root *ladh- "to be hidden" (see latent). So called because the element was "concealed" in rare minerals.