Uraniscus
noun, plural uranisci
[yoo r-uh-nis-ahy] /ˌyʊər əˈnɪs aɪ/ (Show IPA). Architecture.
1.
a starlike ornament, as in a coffer of a ceiling.
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- Uranite-group
noun 1. the mineralogical group including uranites and related minerals.
- Uranium
noun, Chemistry. 1. a white, lustrous, radioactive, metallic element, occurring in pitchblende, and having compounds that are used in photography and in coloring glass. The 235 isotope is used in atomic and hydrogen bombs and as a fuel in nuclear reactors. Symbol: U; atomic weight: 238.03; atomic number: 92; specific gravity: 19.07. noun 1. a […]
- Uranium-235
noun, Chemistry. 1. the radioactive uranium isotope having a mass number of 235, comprising 0.715 percent of natural uranium. When bombarded with neutrons it undergoes fission with the release of energy.