1. A metal coating bonded onto another metal under high pressure and temperature.
2. The process of forming such a coating.
3. A protective or insulating layer fixed to the outside of a building or another structure.

[Earlier, clothing, possibly from CLAD².]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.