phanerocrystalline


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phanerocrystalline

(ˌfænərəʊˈkrɪstəlɪn; -ˌlaɪn)
adj
(Geological Science) (of igneous and metamorphic rocks) having a crystalline structure in which the crystals are large enough to be seen with the naked eye
[C19: from Greek phaneros visible + crystalline]