sphenePronunciation: /sfiːn/Definition of sphene noun [mass noun] a greenish-yellow or brown mineral consisting of a silicate of calcium and titanium, occurring in granitic and metamorphic rocks in wedge-shaped crystals. Origin: early 19th century: from French sphène, from Greek sphēn 'wedge'sphene in other Oxford dictionaries Definition of sphene in the US English dictionary
