ˈbōrəˌsīt, ˈbȯr- noun
( -s )
Etymology: German borazit, from Medieval Latin borac-, borax + German -it -ite
: a mineral Mg 3 B 7 O 13 Cl consisting of a borate and chloride of magnesium that is strongly pyroelectric and occurs in hard glassy crystals and in softer white masses (hardness 7, specific gravity 2.9)