D defs.my
Entry 1 sense Webster, 1913

Quartzite

· Quartz·ite · IPA /ˈk(w)ɔɹtˌsaɪt/
01 n. Massive quartz occurring as a rock; a metamorphosed sandstone; -- called also quartz rock.
  1. 1.
    Massive quartz occurring as a rock; a metamorphosed sandstone; -- called also quartz rock.(Min.) Also: quartz rock