Definition of excitation
noun
1 technical the application of energy to a particle, object, or physical system, in particular. Physics the process in which an atom or other particle adopts a higher energy state when energy is supplied:thermal excitation Physiology the state of enhanced activity or potential activity of a cell, organism, or tissue that results from its stimulation. Physics the process of applying current to the winding of an electromagnet to produce a magnetic field. Electronics the process of applying a signal voltage to the control electrode of an electron tube or the base of a transistor.
2the action or state of exciting or being excited; excitement:a state of sexual excitation