ophite

oph·ite  (ft, ft)

n.

1. A mottled green rock composed of diabase.

2. Any of various green rocks, such as serpentine.

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[Middle English ophites, from Latin ophts, from Greek ophts (lithos), serpentlike (stone), from ophis, serpent.]

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ophite [ˈəʊfaɪt]

n

(Earth Sciences / Geological Science) any of several greenish mottled rocks with ophitic texture, such as dolerite and diabase

[from Latin ophītēs, from Greek, from ophis snake: because the mottled appearance resembles the markings of a snake]