Basic Guidelines For English Spellings
READ THESE ARTICLES
1Chemistry
Of or relating to uranium in one of its lower oxidation states (often +4); designating such a state. Contrasted with "uranic".
2rare Generally. Relating to or containing uranium as an element.
Mid 19th century; earliest use found in Charles Shepard (1804–1886). From uran- + -ous, probably after French uraneux.