ˌ ̷ ̷ ̷ ̷ˈkrāˌsīt noun
( -s )
Etymology: yttr ium + -o- + cras- (from Greek krasis mixing, combination) + -ite — more at crasis
: a mineral approximately (Y,Th,U,Ca) 2 (Ti,Fe,W) 4 O 11 or (Y,Th,U,Ca)(Ti,Fe,W) 2 O 5 (OH) consisting of an oxide or basic oxide of the yttrium metals, thorium, uranium, titanium, iron, and tungsten and occurring in pitchy-black orthorhombic crystals (hardness 5.5-6, specific gravity 4.8)