hypersthene
hy·per·sthene
noun \ˈhī-pərs-ˌthēn\Definition of HYPERSTHENE
: an orthorhombic grayish or greenish black or dark brown pyroxene
— hy·per·sthe·nic \ˌhī-pərs-ˈthe-nik, -ˈthē-\ adjective
Origin of HYPERSTHENE
French hypersthène, from Greek hyper- + sthenos strength
First Known Use: circa 1808
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