/ Dictionary / Index T threshold: Meaning and Definition of Find definitions for: thresh•old Pronunciation: (thresh'ōld, thresh'hōld), [key] — n. the sill of a doorway. the entrance to a house or building. any place or point of entering or beginning: the threshold of a new career. Also called the point at which a stimulus is of sufficient intensity to begin to produce an effect: the threshold of consciousness; a low threshold of pain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: threshold (Thesaurus) threshing machine threw Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language