Gismondite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [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]