Hypertext Webster Gateway: "uranium"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Uranium \U*ra"ni*um\, n. [NL., from Uranus the planet. See
{Uranus}.] (Chem.)
An element of the chromium group, found in certain rare
minerals, as pitchblende, uranite, etc., and reduced as a
heavy, hard, nickel-white metal which is quite permanent. Its
yellow oxide is used to impart to glass a delicate
greenish-yellow tint which is accompanied by a strong
fluorescence, and its black oxide is used as a pigment in
porcelain painting. Symbol U. Atomic weight 239.
From WordNet (r) 1.7 (wn)
uranium
n : a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and
nuclear weapons [syn: {U}, {atomic number 92}]
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