The term UNBRIDGED AREA can be summarized as a GAP or space that is not connected or spanned by a bridge. This term is often used to describe a geographical area that is not connected by a bridge, such as a river or lake, or an area of land that is not connected by a road or railway. It can also be used to describe a GAP in knowledge or understanding, such as a missing piece of information or a lack of understanding of a concept.