/ Dictionary / Index S sudden infant death syndrome: Meaning and Definition of Find definitions for: sud'den in'fant death' syn"drome Pronunciation: [key] — Pathol. Pathol. death from the sudden cessation of breathing (apnea) of a seemingly healthy infant, almost always during sleep, sometimes traceable to a chronic oxygen deficiency. Abbr.: SIDS&hasp; Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sudden death Sudermann Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language