The word "宽甸" is formed by combining the character "宽", meaning "wide" or "broad", with "甸", meaning "suburbs" or "countryside", to create a toponym that descriptively denotes a geographical area characterized by expansive rural land. This name likely originated from the physical topography of the region, where "宽" references the broad terrain and "甸" indicates its outlying, pastoral nature, resulting in a direct literal representation of the landscape.