1. Chiefly British. Variant of demon.
2. Variant of daimon.
3. Computer Science. A program or process that sits idly in the background until it is invoked to perform its task.

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.