n.
1.(computer science) the technique of representing the real world by a computer program
2.the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
3.representation of something (sometimes on a smaller scale)
4.the act of giving a false appearance
Idiom of the Day
up and around
out of bed and moving around, moving from one place to another
I was up and around before 6:00 AM this morning.