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porphyry
This term is primarily used in geological and archaeological contexts. In geology, it describes a texture of igneous rock characterized by large crystals embedded in a finer-grained matrix. In an art-historical or archaeological context, it specifically refers to the purple-red stone from Egypt, which became a symbol of imperial power and status in the Roman and Byzantine Empires.
As a material noun referring to a type of rock or mineral substance, it is treated as uncountable. It describes the substance itself rather than individual stones or objects made from it.
Ý nghĩa
Ví dụ
The geologist identified the sample as a volcanic porphyry due to its distinct crystal size.
Imperial porphyry was once reserved exclusively for the Roman emperors.
Look at these large phenocrysts embedded in the porphyry matrix.
The sarcophagus was carved from a single massive block of purple porphyry.
I wonder if this rock is actually a type of porphyry or just a coarse granite.
The columns of the ancient palace were made of polished red porphyry.
Porphyry forms when magma cools at different rates during its ascent.
The museum exhibit explains why porphyry was so difficult to carve.