词根：pand, pans = 展开
同源词：
1. expand [ex- 加强意义，pand 展开]
v.张开；展开；扩张；伸展；膨胀
2. expandable [见上，-able 可...的]
adj.可张开的；可展开的；可扩张的
3. expander [见上，-er 表示物]
n. 扩张器；扩张剂
4. expanded [见上，-ed ...的]
adj.展开的；被扩张的
5. expanse [ex- 加强意义，pans 展开；“展开的区域或空间”→]
n.茫茫一片；广阔的空间；浩瀚；苍天
6. expansible [见上，-ible 可...的]
adj. 可扩张的；可扩大的
7. expansive [见上，-ive ...的]
adj.扩张的；扩大的；膨胀的
8. expansion [见上，-ion 名词后缀]
n.展开；扩张；扩大
9. expansionism [见上，-ism 主义]
n.扩张主义，领土扩张主义
10. expansionist [见上，-ist 表示人]
n./adj. 扩张主义者；[-ist ...主义的] 扩张主义的，侵略性的
11. expansionary [见上，-ary ...的]
adj.展开性的；扩张性的；扩展性的
词根词缀：-ectasis
【来源及含义】Greek: ektasis; dilated, expanded, distended, extension +
【同源单词】aeroatelectasis, angiectasis, angiotelectasis, arteriectasis, atelectasis, bronchiectasis
词根词缀：edif-
【来源及含义】Latin: to build, to erect a building; a building, a sanctuary, a temple; originally, aedes, "building a hearth" or "to build a hearth" because the fire in the hearth was the center of the home in early times since it supplied both heat and light; over time, the meaning expanded from the hearth itself to the home and building that enclosed it