porphyry

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English[edit]

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A piece of porphyry from Sweden
purple porphyry

Etymology[edit]

From Ancient Greek πορφυρίτες λίθος ("purple stone").

Pronunciation[edit]

Noun[edit]

porphyry (countable and uncountable, plural porphyries)

  1. (geology) a hard igneous rock consisting of large crystals in a fine-grained matrix
    1. A purple-red rock of this kind.

Derived terms[edit]