from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A rock fragment foreign to the igneous mass in which it occurs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any piece of rock having a different origin to that of the igneous rock in which it is found
from The Century Dictionary and Cyclopedia
- n. In petrography, a term proposed by Sollas (1894) for a rock inclosed in an intrusive rock, and not derived from the igneous magma.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (geology) a piece of rock of different origin from the igneous rock in which it is embedded
Sorry, no etymologies found.