Initialism of undergraduate research assistant.

(software) Initialism of Universal Remote Access.

plural of URA

Uranium that contains a reduced (depleted) amount of the fissile isotope U-235 compared to natural uranium; it is used in applications where the nuclear properties of the uranium are not important, and the uranium is instead being used for its mechanical or chemical properties.

The element with atomic number 92 and symbol U: a radioactive silvery-grey metal in the actinide series.

(organic chemistry) One of the bases of RNA, pairing with adenine.

(astronomy) The seventh planet in our solar system, discovered in 1781 by Sir William Herschel.

(chemistry, military) Uranium enriched with a higher than normal amount of the fissile isotope U-235; used in nuclear reactors and nuclear weapons.

(pathology) Of, relating to, or causing uremia.

The Ural Mountains