Definition of "Expand" :
verb: become larger in size or volume or quantity
"His business expanded rapidly."
verb: exaggerate or make bigger
verb: grow vigorously
verb: expand the influence of
verb: make bigger or wider in size, volume, or quantity
"Expand the house by adding another wing."
verb: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
verb: extend in one or more directions
"The dough expands."