Thomsonite
Pronunciation : Thom"son*ite
Part of Speech : n.
Etymology : [From R.D.Thomson, of Glasgow.] (Min.)
Definition : Defn: A zeolitic mineral, occurring generally in masses of a radiated structure. It is a hydrous silicate of aluminia, lime, and soda. Called also mesole, and comptonite.
Source : Webster's Unabridged Dictionary, 1913