"excited state." YourDictionary, n.d. Web. 05 December 2018. <https://www.yourdictionary.com/excited-state>.
excited state. (n.d.). Retrieved December 05th, 2018, 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.