The term "open concept" refers to a design approach in interior layout that emphasizes openness, space and functionality. It typically involves removing walls or other barriers between different areas of a room, creating an unobstructed flow from one area to another. This allows for greater flexibility in the use of the space, as well as increased natural light and airflow. The idea behind this design is to create a sense of openness, spaciousness and connectivity among various spaces within a home or office.