[ 'pɔ:fɪri ]
■ noun ( plural porphyries ) a hard igneous rock containing crystals of feldspar in a fine-grained, typically reddish groundmass.
Origin
ME: via med. L. from Gk porphuritēs , from porphura 'purple'.
[ 'pɔ:fɪri ]
■ noun ( plural porphyries ) a hard igneous rock containing crystals of feldspar in a fine-grained, typically reddish groundmass.
Origin
ME: via med. L. from Gk porphuritēs , from porphura 'purple'.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004