The word "扩展" is formed by combining the characters "扩" and "展". "扩" consists of the radical "扌" (hand), indicating action, and the component "广" (broad), conveying the sense of enlarging. "展" is composed of "尸", often representing a covering or body, and "㠭", an ancient form meaning to spread out, implying unfolding or extending. Together, they create a compound where "扩" emphasizes making larger and "展" emphasizes spreading out, resulting in the meaning to expand or extend in scope or size.