from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellow ore of uranium and radium with composition K(UO2)2(VO4)2·3H2O.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A yellow mineral that is a potassium uranyl vanadate that is a major ore or uranium, with the chemical formula K2(UO2)2(VO4)2·3H2O.
from The Century Dictionary and Cyclopedia
- n. A more or less impure hydrated vanadate of uranium and potash, occurring somewhat abundantly in Montrose county and elsewhere in Colorado: found as a yellow crystalline powder or in loosely coherent masses. It contains radium and is said to be highly radio-active.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a yellow radioactive mineral; an ore of uranium and radium and vanadium
French, after Marie Adolphe Carnot (died 1920), French mining engineer.(American Heritage® Dictionary of the English Language, Fourth Edition)