We explore training and development through the lenses of scholars and practitioners who have provided definitions and frameworks for exploring this area which is essential to human resource development (HRD). Thirty-five definitions of training and development are identified and analyzed. Themes from the analysis are explored, conclusions discussed, and recommendations for future exploration forwarded. The intent of this exploration is to add to the ongoing discussions regarding definitions, theory-building and ongoing development of the HRD field. (Contains 1 table.) [For complete proceedings, see ED491481.]