/ Dictionary / Index E erethism: Meaning and Definition of Find definitions for: er•e•thism Pronunciation: (er'u-thiz"um), [key] — n. Physiol. an unusual or excessive degree of irritability or stimulation in an organ or tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: erethism (Thesaurus) Ereshkigal Eretz Israel Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language