| 释义 |
porphyry/ˈpɔ:firi/n. (pl. -ies) 1 a hard rock quarried in ancient Egypt, composed of crystals of white or red feldspar in a red matrix (古埃及)一种硬质岩石 2 Geol. an igneous rock with large crystals scattered in a matrix of much smaller crystals 【地质】斑岩 □ porphyritic /-ˈritik/ adj.[Middle English, ultimately via medieval Latin porphyreum from Greek porphuritēs, from porphura ‘purple’] |