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."