Malchus, a.d. c233–c304, Greek philosopher.

Related formsPor·phyr·e·an [pawr-feer-ee-uh n] /pɔrˈfɪər i ən/, adjectivePor·phyr·i·an, adjective, nounPor·phyr·i·an·ist, noun
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Historical Examples of malchus

British Dictionary definitions for malchus


noun plural -ries

any igneous rock with large crystals embedded in a finer groundmass of minerals
obsolete a reddish-purple rock consisting of large crystals of feldspar in a finer groundmass of feldspar, hornblende, etc

Word Origin for porphyry

C14 porfurie, from Late Latin porphyrītēs, from Greek porphuritēs (lithos) purple (stone), from porphuros purple



original name Malchus. 232–305 ad, Greek Neo-Platonist philosopher, born in Syria; disciple and biographer of Plotinus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for malchus



type of ornamental stone, late 14c., porfurie, from Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites, a purple semi-precious stone quarried near the Red Sea in Egypt, from Greek porphyrites (lithos) "the purple (stone)," from porphyra (n.) "purple, purple dye" (see purple). Spelling Latinized mid-15c. Now used generally for a type of igneous rock without regard to color. Porphyrios was an ancient proper name.

Online Etymology Dictionary, © 2010 Douglas Harper

malchus in Science



An igneous rock containing the large crystals known as phenocrysts embedded in a fine-grained matrix.
Related formsporphyritic adjective (pôr′fə-rĭtĭk)
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