Look up: Porphyry

1. porphyry
   igneous rock in which relatively large and conspicuous grains, called phenocrysts, are surrounded by a finer-grained matrix, generally called the groundmass.
   Found on http://www.cst.cmich.edu/users/dietr1rv/
   
   
2. porphyry
   [n] - any igneous rock with crystals embedded in a finer groundmass of minerals
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. porphyry
   finely grained, slightly translucent variety of granite Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. Porphyry
   Por'phy·ry noun ; plural Porphyries . [ French porphyre , Latin porphyrites , from Greek ... like purple, from ... purple. See Purple .] (Geol.) A term used somewhat loosely to designate a rock consisting of a...
   Found on http://www.encyclo.co.uk/webster/P/130
   
   
5. porphyry
   Origin: F. Porphyre, L. Porphyrites, fr. Gr. Like purple, fr. Purple. See Purple. ... <geology> A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, an...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. porphyry
   porphyritic rock noun any igneous rock with crystals embedded in a finer groundmass of minerals
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
7. Porphyry
   • (n.) A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, and green varieties, which are highly esteemed as marbles.
   Found on http://thinkexist.com/dictionary/meaning
   
   
8. porphyry
   (from the article `dike`) ...The length of a dike usually depends upon how far it can be traced across the surface; dikes can be up to hundreds of miles long. Dikes have a ... ...not readily discernible with the naked eye. In any case, feldspar crystals are relatively rare; almost all occur in miarolitic cavities, in ... Among the mo...
   Found on http://www.britannica.com/eb/a-z/p/95
   
   
9. Porphyry
   Neoplatonist Greek philosopher, important both as an editor and as a biographer of the philosopher Plotinus and for his commentary on Aristotle`s ... [13 related articles]
   Found on http://www.britannica.com/eb/a-z/p/95
   
   
10. porphyry
    porphyry (pôr'furē) , igneous rock composed of large, conspicuous crystals (phenocrysts) and a groundmass in which the phenocrysts are embedded. Some authorities consider the expression “porphyritic rock” better usage than porphyry, since the term refers only to the textu...
    Found on http://www.infoplease.com/ce6/sci/A08397
    
    
11. Porphyry
    Porphyry (pôr'firē) , c.232–c.304, Greek scholar and Neoplatonic philosopher. He studied rhetoric under Cassius Longinus and philosophy under Plotinus. He later lectured in Rome on the philosophy of Plotinus and was the teacher of the Neoplatonist Iamblichus. He wrote lives of ...
    Found on http://www.infoplease.com/ce6/people/A08
    
    
12. Porphyry
    (c. 232-304 B.C.) A disciple of Plotinus, who adapted Aristotelian logic to Neo-Platonic philosophy. His method of classification by means of dichotomy is known as the 'Tree of Porphyry' (q.v.). Cf. Isagoge (tr. by Boethius, q.v.). -- R.B.W.
    Found on http://www.ditext.com/runes/p.html
    
    
13. porphyry
    Any igneous rock containing large crystals in a finer matrix
    Found on http://www.talktalk.co.uk/reference/ency
    
    
14. Porphyry
    (geology) `Porphyry` is a variety of igneous rock consisting of large-grained crystals, such as feldspar or quartz, dispersed in a fine-grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts. In its non-geologic, traditional use, the term "porphyry" ref...
    Found on http://en.wikipedia.org/wiki/Porphyry
    
    
15. Porphyry
    (philosopher) `Porphyry of Tyre` , Porphyrios, AD 234–c. 305) was a Neoplatonic philosopher who was born in Tyre. He edited and published the Enneads, the only collection of the work of his teacher Plotinus. He also wrote many works himself on a wide variety of topics. Hi...
    Found on http://en.wikipedia.org/wiki/Porphyry