Definitions
1.NounAn electronic musical instrument that creates its sounds with electronics and generally is played via a keyboard.
2.NounAn electronic instrument consisting of a module, or a set of modules, that creates its sounds with electronics and does not have any keyboard.
3.NounAn electronic circuit that generates an electronic signal oscillation with accurate timing from a reference oscillator.
4.NounAn electronic device that generates electronic signal patterns to test an electronic circuit.
5.NounA software program that allows a computer to be used as a musical instrument – virtual instrument