We found 7 dictionaries that define the word porphyritic rock:

General (6 matching dictionaries)

1. porphyritic rock: Vocabulary.com
2. porphyritic rock: Dictionary.com
3. porphyritic rock: Rhymezone
4. porphyritic rock: FreeDictionary.org
5. porphyritic rock: Mnemonic Dictionary
6. porphyritic rock: TheFreeDictionary.com

Computing (1 matching dictionary)

7. porphyritic rock: Encyclopedia

(Note: See porphyritic_rocks as well.)

Definitions from WordNet (porphyritic rock) ▸ noun:  any igneous rock with crystals embedded in a finer groundmass of minerals ▸ Words similar to porphyritic rock ▸ Usage examples for porphyritic rock ▸ Idioms related to porphyritic rock ▸ Wikipedia articles (New!) ▸ Words that often appear near porphyritic rock ▸ Rhymes of porphyritic rock ▸ Invented words related to porphyritic rock