CAD/CAM :
Computer Aided Design is the process of creating industrial product designs using computer software, while Computer Aided Manufacturing uses computers to programme these designs into the equipment that will actually manufacture the products.
From : www.z2z.com/site01/itglos01.html

Computer-Aided Design and Computer-Aided Manufacturing; the use of computer database systems to design parts and systems, generate drawings, perform complex structural and design analyses, and directly program numerically controlled machines to produce parts.
From : www.autocenter.com/about/