English dictionary

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English noun: dilation

1. dilation (communication) a lengthy discussion (spoken or written) on a particular topic

Broader (hypernym)discourse, discussion, treatment

2. dilation (act) the act of expanding an aperture

SamplesThe dilation of the pupil of the eye.


Broader (hypernym)enlargement, expansion

Narrower (hyponym)mydriasis, vasodilation

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