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
come down to earth
to stop imagining or dreaming about things
My friend has finally come down to earth and is seriously looking for a job.