"excited state." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/excited-state>.
excited state. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/excited-state
A state of a physical system in which the system has more than the minimum possible potential energy. Excited states tend to be unstable and easily or spontaneously revert to lower energy states, giving off energy.