Datolite
Pronunciation : Dat"o*lite
Part of Speech : n.
Etymology : [From. Gr. to divide + -lite; in allusion to the granular structure of a massive variety.] (Min.)
Definition : Defn: A borosilicate of lime commonly occuring in glassy,, greenish crystals. [Written also datholite.]
Source : Webster's Unabridged Dictionary, 1913