1) A theoretical position, often allied to symbolic interactionism, role theory, and the work of Erving Goffman, which uses the stage and the theatre as its key organizing metaphor. The idea that ‘all the world is a stage and all the people players'...
http://www.encyclopedia.com/doc/1O88-dramaturgy.html
2) Dramaturgs can write plays, but they can also edit and restore plays, assist with adaptations of stage works, and work on musical productions such as operas....[D]ramaturgy also involves staging itself, including blocking of actors, set design, and the aesthetic composition of theatrical productions.
http://www.wisegeek.com/what-is-dramaturgy.htm
3) The art or technique of dramatic composition or theatrical representation.
http://dictionary.reference.com/browse/dramaturgy
Gotthold Ephraim Lessing
