The Full form of RMO is Resident Medical Officer. A RMO is a medical practitioner who works for public hospitals to gain clinical experience after his first year internship. He works under the supervision of a senior clinician or medical professionals to diagnose, treat and prevent chronic and life-threatening diseases and injuries. Most doctors spend 2 to 3 years working as a resident in different hospital departments, before beginning specialist training. Residency or postgraduate training is a stage of graduate medical education. It refers to a qualified physician, dentist, podiatrist, or veterinarian (one who holds the degree of MD, DMD, DVM, DPM, DDS, DO or MB; BS, BDS, BDent, MBChB, or BMed,) who practices medicine, usually in a hospital or clinic, under the direct or indirect supervision of a senior clinician registered in that specialty such as consultant or an attending physician. In many jurisdictions, successful completion of such training is a requirement in order to obtain an unrestricted license to practice medicine, and in particular a license to practice a chosen specialty. An individual engaged in such training may be referred to as a resident, registrar, house officer, or trainee depending on the jurisdiction. Residency training may be followed by sub-specialty training or fellowship.