Meaning of THOMSONITE in English

ˈtäm(p)səˌnīt noun

( -s )

Etymology: Thomas Thomson died 1852 Scottish chemist + English -ite

: a mineral NaCa 2 Al 5 Si 5 O 20 .6H 2 O of the zeolite family consisting of a hydrous silicate of aluminum, calcium, and sodium, occurring generally in masses of a radiated structure or rarely in distinct orthorhombic crystals, and being snow-white when pure (hardness 5-5.5)

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.