| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
sudden infant death syndrome sud·den infant death syndrome (sŭd'n)
n.
Abbr. SIDS A fatal syndrome affecting apparently healthy sleeping infants under a year old and that is characterized by a sudden cessation of breathing. Also called crib death.
| sudden infant death syndrome (sŭd'n) Pronunciation Key
A fatal condition that affects sleeping infants that are less than one year old and appear to be healthy. It is characterized by a sudden cessation of breathing and is thought to be caused by a defect in the central nervous system. Also called crib death, SIDS. |
Also called crib death, the deaths of sleeping infants less than a year old for unexplained reasons.