computer graphics

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The set of technologies used to create art with computers.
• noun Art or designs created using such technologies.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun computing the representation and manipulation of pictorial data by a computer
• noun computing the various technologies used to create and manipulate such pictorial data
• noun computing the images so produced
• noun computing a sub-field of computer science which studies methods for digitally synthesizing and manipulating visual content.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the pictorial representation and manipulation of data by a computer