Open English Wordnet
Verbs
(v)expandbecome larger in size or volume or quantity“his business expanded rapidly” (v)expandmake bigger or wider in size, volume, or quantity“expand the house by adding another wing” (v)elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound, dilateadd details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing“She elaborated on the main ideas in her dissertation” (v)extend, expandexpand the influence of“The King extended his rule to the Eastern part of the continent”