乳にゅう幼よう児じ突とつ然ぜん死し症しょう候こう群ぐんMeaningsNoun1. sudden infant death syndrome; SIDS; cot death; crib deathKanji used乳milk幼very young児kid突thrust然sort of thing死death症medical condition候season群a pack (e.g. of dogs)Composed of乳にゅう幼よう児じbabies and preschool childrenNoun突とつ然ぜんabrupt; sudden; unexpectedNo-adjective死しdeath; (an) outNoun症しょう候こう群ぐんsyndromeNoun