porphyritic rock

/ˈpɔrfəˌrɪdɪk rɑk/
IPA guide

Other forms: porphyritic rocks

Definitions of porphyritic rock
  1. noun
    any igneous rock with crystals embedded in a finer groundmass of minerals
    synonyms: porphyry
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    type of:
    igneous rock
    rock formed by the solidification of molten magma
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