tyuyamunitePronunciation: /ˌtjuːjəˈmuːnʌɪt/Definition of tyuyamunite noun [mass noun] a yellowish earthy mineral which is an ore of uranium. It consists of a hydrated vanadate of calcium and uranium. Origin: early 20th century: from Tyuya Muyun, the name of a Kyrgyz village, + -ite1tyuyamunite in other Oxford dictionaries Definition of tyuyamunite in the US English dictionary