SAR meaning in Academic & Science ?

The National Society of the Sons of the American Revolution (SAR or NSSAR) is an American congressionally chartered organization, founded in 1889 and headquartered in Louisville, Kentucky. A non-profit corporation, it has described its purpose as maintaining and extending "the institutions of American freedom, an appreciation for true patriotism, a respect for our national symbols, the value of American citizenship, [and] the unifying force of 'e pluribus unum' that has created, from the people of many nations, one nation and one people."

The members of the society are male descendants of people who served in the American Revolutionary War or who contributed to establishing the independence of the United States. It is dedicated to perpetuating American ideals and traditions, and to protecting the Constitution of the United States; the official recognition of Constitution Day, Flag Day, and Bill of Rights Day were established through its efforts. It has members in the United States, Canada, France, Germany, Mexico, Spain, Switzerland, and the United Kingdom.

The organization is distinct from the Sons of the Revolution, a separate descendants heritage organization founded on February 22, 1876 by businessman John Austin Stevens and members of The Society of the Cincinnati. SAR Founder William Osborn McDowell disagreed with the Sons of the Revolution requirement at that time that all state societies were to be subordinate to the New York society.