Definition for Sudden Infant Death Syndrome
From Biology Forums Dictionary
Sudden Infant Death Syndrome is defined as the sudden and unexpected death of a child who has not yet reached his or her first birthday. In the United States, SIDS is the number one cause of death in infants under age one. A majority of victims (90 percent) are under six months of age. SIDS is more likely to happen when the child is between two and four months old, but it can also strike in the later months.