- The great seal is defined as the official seal of a nation or state that is used to verify official documents.
An example of the great seal is the stamp on a U.S. passport that makes it authentic.
The Great Seal of the United States.
great seal definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the chief seal of a nation or state, with which official papers are stamped as proof of having been approved or certified
great seal definition by American Heritage Dictionary
The principal seal of a government or state, with which official documents are stamped.