emanation

n 1: something that is produced by emanation

2: the act of emitting [syn: {emission}]

emulation

One system is said to emulate another when it performs in

exactly the same way, though perhaps not at the same speed. A

typical example would be emulation of one computer by (a

program running on) another. You might use an emulation as a

replacement for a system whereas you would use a simulation if

you just wanted to analyse it and make predictions about it.

(1995-05-12)