Definition of porphyroblastic in English:

porphyroblastic

Pronunciation /pôrˌfirəˈblastik/ /ˌpôrfərō-/

adjective

Geology

See porphyroblast

‘Strongly foliated porphyroblastic politic gneiss forms a selvedge up to 100 m thick in sharp (but in some cases ductile) contact with peridotite on the northern margin of the Carratraca massif.’
  • ‘The earliest porphyroblastic fabric is not restricted to the immediate metapluton surroundings.’