The Collaborative International Dictionary of English v.0.48:

Moderation \Mod`er*a"tion\, n. [L. moderatio: cf. F.
   mod['e]ration.]
   1. The act of moderating, or of imposing due restraint.
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   2. The state or quality of being mmoderate.
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            In moderation placing all my glory,
            While Tories call me Whig, and Whigs a Tory. --Pope.
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   3. Calmness of mind; equanimity; as, to bear adversity with
      moderation.
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            The calm and judicious moderation of Orange.
                                                  --Motley.
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   4. pl. The first public examinations for degrees at the
      University of Oxford; -- usually contracted to mods.
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WordNet (r) 3.0 (2006):

moderation
    n 1: quality of being moderate and avoiding extremes [syn:
         moderation, moderateness] [ant: immoderateness,
         immoderation]
    2: a change for the better [syn: easing, moderation,
       relief]
    3: the trait of avoiding excesses [syn: temperance,
       moderation] [ant: intemperance]
    4: the action of lessening in severity or intensity; "the object
       being control or moderation of economic depressions" [syn:
       moderation, mitigation]