en·sta·tite \ˈenztəˌtīt, ˈen(t)stə-\noun (-s) Etymology: German enstatit, from Greek enstatēs adversary + German -it -ite : an orthorhombic mineral MgSiO3 of the pyroxene group consisting of magnesium silicate usually occurring massive and varying from grayish white to olive green and brown — compare bronzite • en·sta·tit·ic\| ̷ ̷ ̷ ̷|tid.ik\adjective