Definition of uranous in US English:

uranous

adjective

  • 1Chemistry. Of or relating to uranium in one of its lower oxidation states (often +4); designating such a state. Contrasted with "uranic".

  • 2Generally. Relating to or containing uranium as an element. rare.

Origin

Mid 19th century; earliest use found in Charles Shepard (1804–1886). From uran- + -ous, probably after French uraneux.