[hy.per.sthene] n [F hypersthene, fr. Gk hyper- + sthenos strength] (ca. 1808): an orthorhombic grayish or greenish black or dark brown pyroxene -- hy.per.sthe.nic adj
HYPERSTHENE
Meaning of HYPERSTHENE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012