/ Dictionary / Index E excited state: Meaning and Definition of Find definitions for: excit'ed state' Pronunciation: [key] — Physics. Physics. any of the energy levels of a physical system, esp. an atom, molecule, etc., that has higher energy than the lowest energy level. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. excited excitement Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language