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.
Synodic Period. the time interval during which a planet, moving in orbit around the sun, returns to its former position relative to the sun as seen from the earth. For example, the synodic period of Venus is the time between successive identical phases.