Growing a Crystal on Top of Another Crystal

This page is the CodyCross answer for the clue below from Mesopotamia, Group 971, Puzzle 3 (Reed Industries).

Question is: Growing a Crystal on Top of Another Crystal

and the answer is: EPITAXY

Word Meaning:

EPITAXY — (crystallography) An overgrowth in which the overlying crystal is either induced into the same orientation, or otherwise grows under the influence of the underlying crystal into the same orientation.

Definitions from Wiktionary.