Noun

The state or quality of being moderate; avoidance of extremes

* {{quote-book

, passage=...It regulates and governs the Passions of the Mind, and brings them into due moderation and frame... , page=17 , title=An Account of the Growth of Deism in England , author=William Stephens , year=1696}}

* 1772 , , [http://books.google.com/books?id=twVuAAAAMAAJ&pg=PA394]:

Mr. Chairman, at this moment I stand astonished at my own moderation !

* 1821 October 12, , [http://books.google.com/books?id=5q4XBa5jsy8C&pg=PA7]:

America is a model of force and freedom and moderation - with all the coarseness and rudeness of its people.

An instance of moderating: bringing something away from extremes, especially in a beneficial way

* {{quote-news, year=1936, date=March, work=The Southern Lumberman citation

, passage=With the quick moderation of the weather some buying has appeared that had been held up because of the extremely cold weather

The process of moderating a discussion

The moderation of a large online forum can be hard work.

Noun

(en noun)

An alteration or change for the better; correction of a fault or of faults; reformation of life by quitting vices.

In public bodies; Any alteration made or proposed to be made in a bill or motion that adds, changes, substitutes, or omits.

* 2014 , Ian Black, " Courts kept busy as Jordan works to crush support for Isis", The Guardian , 27 November 2014:

Arrests and prosecutions intensified after Isis captured Mosul in June, but the groundwork had been laid by an earlier amendment to Jordan’s anti-terrorism law. It is estimated that 2,000 Jordanians have fought and 250 of them have died in Syria – making them the third largest Arab contingent in Isis after Saudi Arabians and Tunisians.

(legal) Correction of an error in a writ or process.

An addition to and/or alteration to the Constitution.

The First Amendment guarantees freedom of religion, speech, press, assembly, and petition.

The Thirteenth Amendment to the United States Constitution abolished slavery.

That which is added; that which is used to increase or supplement something.

a soil amendment