n. any of a group of minerals commonly found as components of igneous rocks, composed of silicates of calcium, magnesium, and iron.
[ PYRO- + Gk xenos stranger (because supposed to be alien to igneous rocks) ]
n. any of a group of minerals commonly found as components of igneous rocks, composed of silicates of calcium, magnesium, and iron.
[ PYRO- + Gk xenos stranger (because supposed to be alien to igneous rocks) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012