-ˈhēˌdrīt noun
also cli·no·edrite -ōˈē-
( -s )
Etymology: International Scientific Vocabulary clin- + Greek hedra seat, base + International Scientific Vocabulary -ite; originally formed as German klinoëdrit — more at sit
: a calcium zinc silicate CaZnSiO 3 (OH) 2 occurring in the form of colorless, white, or purplish monoclinic crystals (hardness 5.5, specific gravity 3.33)