Definition of dilatation noun from the Oxford Advanced American Dictionary

 

dilatation

 noun
noun
NAmE//ˌdɪləˈteɪʃn//
 
, NAmE//ˌdaɪləˈteɪʃn//
 
[uncountable](medical)
 
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the process of becoming wider (= of becoming dilated ), or the action of making something become wider
See the Oxford Advanced Learner's Dictionary entry: dilatation

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