/ Dictionary / Index S suppression: Meaning and Definition of Find definitions for: sup•pres•sion Pronunciation: (su-presh'un), [key] — n. the act of suppressing. the state of being suppressed. conscious inhibition of an impulse. the absence of parts normally or usually present due to the action of frost, disease, or insects. the elimination of a component of a varying emission, as the elimination of a frequency or group of frequencies from a signal. the reduction or elimination of irregular current oscillations or frequencies in a circuit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: suppression (Thesaurus) suppressant suppressor T cell Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language