noun
- plural of porphyry; igneous rocks containing large crystals embedded in a fine-grained matrix
Usage: geology
Examples
- The geologist collected samples of various porphyries from the volcanic region.
- Ancient Romans prized purple porphyries for decorative stonework.
- The mountain contained several types of porphyries with distinct crystal formations.
- Porphyries are commonly found in areas of past volcanic activity.
- The quarry produced high-quality porphyries used in construction projects.