'Gismondite' definitions:

Definition of 'Gismondite'

From: GCIDE

Gismondine \Gis*mon"dine\ (j[i^]s*m[o^]n"d[i^]n), Gismondite \Gis*mon"dite\ (j[i^]s*m[o^]n"d[imac]t), n. [From the name of the discoverer, Gismondi.] (Min.) A native hydrated silicate of alumina, lime, and potash, first noticed near Rome. [1913 Webster]