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diopside

diopside definition

di·op·side (dī äp′sīd′, -sid)

noun

a light-colored, hard, crystalline pyroxene, CaMg(SiO), calcium magnesium silicate, found in some limestones and metamorphic rocks and sometimes used as a gem

Etymology: Fr < di- (see di-) + Gr opsis, appearance, sight (< ōps, eye); assoc. in meaning with Gr diopsis, transparency < dia-, through + opsis, sight

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