Source : Webster's Revised Unabridged Dictionary (1913)

Pediatrics \Ped`i*at"rics\, n.
   That branch of medical science which treats of the hygiene
   and diseases of children.

Source : WordNet®

pediatrics
     n : the branch of medicine concerned with the treatment of
         infants and children [syn: {paediatrics}, {pediatric
         medicine}]