Residency is a stage of graduate medical training. A resident or house officer is a physician (holding either a M.D. , D.O. , MBBS, MBChB, BMed or D.P.M. degree) who practices medicine usually in a hospital or clinic.The definition of residency varies worldwide by country and structure of the medical industry.esidency is a stage of graduate medical training. A resident or house officer is a physician (holding either a M.D. , D.O. , MBBS, MBChB, BMed or D.P.M. degree) who practices medicine usually in a hospital or clinic.
In astronomy, the term period usually refers to how long an object takes to complete one cycle of revolution. In particular the orbital period of a star or planet is the time it takes to return to the same place in the orbit. Quasi-periodic oscillation. Jump to: navigation, search.
3. (Astronomy) astronomy a precise date to which information, such as coordinates, relating to a celestial body is referred. 4. (Palaeontology) geology a unit of geological time within a period during which a series of rocks is formed: the Pleistocene epoch. 5.