pəˈridəˌtīt noun
( -s )
Etymology: French péridotite, from péridot + -ite
: any of a group of granitoid igneous rocks composed of olivine and usually other ferromagnesian minerals but with little or no feldspar and usually occurring in dikes or small intrusive bodies
• pe·rid·o·tit·ic ̷ ̷| ̷ ̷ ̷ ̷|tid.ik adjective