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



BrE BrE//ˌdaɪləˈteɪʃn//
; NAmE NAmE//ˌdaɪləˈteɪʃn//
; BrE BrE//ˌdɪləˈteɪʃn//
; NAmE NAmE//ˌdɪləˈteɪʃn//
; BrE also BrE//ˌdaɪleɪˈteɪʃn//
[uncountable] (medical)
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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 the Oxford Advanced American Dictionary entry: dilatation

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