The term "open plan" refers to a type of interior design that involves removing walls and other barriers in order to create a more spacious, airy, and open feel within a room or area. This style of layout is often used in offices, homes, and other types of spaces where the goal is to promote collaboration, communication, and productivity among those who occupy it. With an "open plan," there are fewer physical divisions between different areas, allowing for more natural light, better flow of air, and a greater sense of openness and connectivity.