1. A character or symbol representing an idea or a thing without expressing the pronunciation of a particular word or words for it, as in the traffic sign commonly used for "no parking" or "parking prohibited." Also called ideograph.
2. See logogram.
3. A graphic symbol, such as &, $, or @.

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.