ˌfäsfyəˈran ə lˌīt noun
( -s )
Etymology: phosph- + uranyl + -ite
: a mineral (UO 2 ) 3 (PO 4 ) 2 6H 2 O consisting of a hydrous uranyl phosphate and occurring as a deep lemon-yellow powdery substance that exhibits phosphorescence upon exposure to radium emanations