Definition of stage

• any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
• a specific identifiable position in a continuum or series or especially in a process; "a remarkable degree of frankness"; "at what stage are the social sciences?"
• a large platform on which people can stand and can be seen by an audience; "he clambered up onto the stage and got the actors to help him into the box"