Definition of moderation noun from the Oxford Advanced American Dictionary

 

moderation

 noun
noun
NAmE//ˌmɑdəˈreɪʃn//
 
[uncountable]
 
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the quality of being reasonable and not being extreme There was a call for moderation on the part of the trade unions. Alcohol should only ever be consumed in moderation (= in small quantities). Moderation in eating and drinking is the way to stay healthy.
See the Oxford Advanced Learner's Dictionary entry: moderation