Pediatric is the medical term designating something has having to do with children, either their care, treatment, or diseases. It is the adjective form.
The noun form is pediatrics. As a noun it can be either plural or singular but it always keeps the plural spelling.
A person who has gone to medical school to specialize in the care of children is called a pediatrician.
Outside of the United States, the term keeps its original spelling of paediatric, paediatrics, and paediatrician.
Sometimes the term is seen inside the United States with the British spelling, usually if the organization or person wants to be associated with the historical usage or formal sense of the word.
Through a nonprofit foundation, she helped to raise roughly $1.5 million for research into pediatric cancer. [Houston Chronicle]
This acute-care and community teaching hospital trains medical residents in many disciplines, including internal medicine, critical care medicine, surgery, pediatrics, podiatry, and pathology. [CNN Money]
Beloved, retired pediatrician Dr. Larry Morris died Tuesday, leaving behind a long legacy of healing in Gainesville. [Gainesville Times]
It has become the first dental college in the government sector to get two postgraduate (PG) seats in the paediatric dentistry in Maharashtra. [The Times of India]
“For example, paediatrics will be an entirely self-contained area with the waiting area away from the adult waiting area.” [ABC News Australia]
A paediatrician has accused a Cambridge gym of “blatant sexism” for assuming all doctors are men. [Cambridge News]