ウランうらんCommon wordFreq.FrequencyTop 20,000Meanings1nounuranium (U)The chemical element uranium, atomic number 92. Used in nuclear fuel and weapons.from German Uranウランは原げん子し力りょく発はつ電でんの燃ねん料りょうとして使つかわれる。Uranium is used as fuel for nuclear power generation.