To grow broad; to become broader or wider.

To make broad or broader; to render more broad or comprehensive.

make broader; "broaden the road"

To increase the number of results in a search. The Boolean operator "or" will broaden your search to find more references.

To alter a search in order to retrieve more references. Using the Boolean Operator "or" broadens a search.

extend in scope or range or area; "The law was extended to all citizens"; "widen the range of applications"; "broaden your horizon"; "Extend your backyard"

vary in order to spread risk or to expand; "The company diversified"