Definition of bariatrics in English:
 bariatrics
plural noun barɪˈatrɪksˌbɛriˈætrɪks
usually treated as singular The branch of medicine that deals with the study and treatment of obesity.
 Example sentencesExamples
-  Our team includes a psychologist, dietician, exercise physiologist, nursing staff and surgeons, all specially trained in bariatrics.
 -  I got a specialist physician in bariatrics, or obesity.
 -  Minimally invasive or endoscopic techniques are prevalent in all fields including bariatrics; neurosurgery; ear, nose, and throat surgery; and orthopedics.
 
Origin
  
1960s: from baro- + Greek iatros 'physician' + -ics.
   Definition of bariatrics in US English:
 bariatrics
plural nounˌbɛriˈætrɪksˌberēˈatriks
usually treated as singular The branch of medicine that deals with the study and treatment of obesity.
 Example sentencesExamples
-  Minimally invasive or endoscopic techniques are prevalent in all fields including bariatrics; neurosurgery; ear, nose, and throat surgery; and orthopedics.
 -  I got a specialist physician in bariatrics, or obesity.
 -  Our team includes a psychologist, dietician, exercise physiologist, nursing staff and surgeons, all specially trained in bariatrics.
 
Origin
  
1960s: from baro- + Greek iatros ‘physician’ + -ics.