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Definition of dilatation noun from the Oxford Advanced Learner's Dictionary

dilatation

noun
 
/ˌdaɪləˈteɪʃn/,
 
/ˌdɪləˈteɪʃn/
 
/ˌdaɪləˈteɪʃn/,
 
/ˌdɪləˈteɪʃn/
[uncountable] (medical)
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  1. the process of becoming wider (= of becoming dilated), or the action of making something become wider
    Word Originlate Middle English: via Old French from late Latin dilatatio(n-), from the verb dilatare ‘spread out’, from di- ‘apart’ + latus ‘wide’.
See dilatation in the Oxford Advanced American Dictionary
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adjective
 
 
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