ˈhīpə(r)ˌsthēn noun
( -s )
Etymology: French hypersthène, from hyper- + Greek sthenos strength — more at asthen-
: a mineral (Mg,Fe)SiO 3 consisting of an orthorhombic grayish or greenish black or dark brown pyroxene that is a silicate of magnesium and iron isomorphous with enstatite and often has a bronze luster on the cleavage surface
• hy·per·sthenic | ̷ ̷ ̷ ̷|sthenik, -thēn- adjective