Following is the definition of "Industrial Design" according to the IDSA (Industrial Designers Society of America).
"Industrial Design (ID) is the professional service of creating products and systems that optimize function, value and appearance for the mutual benefit of both user and manufacturer.
Industrial designers develop products and systems through collection analysis and synthesis of data guided by the special requirements of their client and manufacturer. They prepare clear and concise recommendations through drawings, models, and descriptions. Industrial designers improve as well as create, and they often work within multi-disciplinary groups that include management, marketing, engineering and manufacturing specialists."
Special thanks: Martin Trust Centre, MIT