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

(uncountable) Inadequacy or incompleteness.

* {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=17 citation , passage=The face which emerged was not reassuring. […]. He was not a mongol but there was a deficiency of a sort there, and it was not made more pretty by a latter-day hair cut which involved eccentrically long elf-locks and oiled black curls.}}

(countable) An insufficiency, especially of something essential to health.

* {{quote-magazine, date=2013-08-31, volume=408, issue=8851, magazine=(The Economist)

, title= Promotion and self-promotion , passage=One of academia’s deficiencies is that, though its lecture halls and graduate schools are replete with women, its higher echelons are not. Often, this is seen as a phenomenon specific to the sciences. … In fact, the disparity applies to the whole grove. Another report from 2006, by the American Association of University Professors, found the same ratio in the faculties of arts, humanities and social science, too.}}

(geometry) The amount by which the number of double points on a curve is short of the maximum for curves of the same degree.

(geometry) The codimension of a linear system in the corresponding complete linear system.