from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A computer simulation of a real or imaginary system that enables a user to perform operations on the simulated system and shows the effects in real time.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A reality that is only based in the computer.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a hypothetical three-dimensional visual world created by a computer; user wears special goggles and fiber optic gloves etc., and can enter and move about in this world and interact with objects as if inside it
From virtual and reality (Wiktionary)