n.
Pronunciation: ' h ī -p ə rs- ˌ th ē n
Function: noun
Etymology: French hypersthène, from Greek hyper- + sthenos strength
Date: circa 1808
: an orthorhombic grayish or greenish black or dark brown pyroxene
– hy · per · sthe · nic \ ˌ h ī -p ə rs- ' the-nik, - ' th ē - \ adjective