The American Heritage® Dictionary of the English Language, 4th Edition
n. The growth of the crystals of one mineral on the crystal face of another mineral, such that the crystalline substrates of both minerals have the same structural orientation.
n. Any of several techniques that grow ordered, crystalline layers on top of an existing monocrystalline substrate.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. growing a crystal layer of one mineral on the crystal base of another mineral in such a manner that its crystalline orientation is the same as that of the substrate
Word Usage
"Ouyang and fellow researchers Jiatao Zhang, Yun Tang and Kwan Lee, say their method offers a host of benefits over the existing process, known as epitaxy, used to create single crystal semiconductors and related devices."