The book's central purpose is the sharing of information.

Breeding is the central purpose for seabirds to visit land.

The central purpose of this ship is to rescue and salvage life.

The central purpose of the measure is to prevent frivolous lawsuits.

The central purpose is to hammer out long-term strategies for the nation as a whole.

The central purpose of the school community is the religious, moral, intellectual, physical and social education of the student.

Until a few minutes ago he had felt no doubt whatever about his central purpose; to help free men from the domination of the spiders.

A central purpose of the federal investigations, he said, has been to protect officials who failed to prevent so much death.

But a central purpose of the party's convention is to motivate supporters to raise and give still more.

The central purpose of event chain diagrams is not to show all possible individual events.