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1[mass noun] The action of dilating a vessel or opening or the process of becoming dilated.
enlargement, increase in size, swelling, distension, dilationView synonyms
- ‘Interventional paediatric cardiology mainly involves dilatation of stenotic vessels or valves and occlusion of abnormal communications.’
- ‘Ten of 12 patients with predominantly extrinsic compression of the central airways underwent dilatation using a high-pressure balloon catheter.’
- ‘Between 14 and 19 weeks of pregnancy, a process known as surgical dilatation and evacuation (often referred to as D & E) may be used.’
- ‘The overall rate of oesophageal perforation after flexible endoscopy involving oesophageal instrumentation, biopsy, or dilatation is 2.6%.’
- ‘He had undergone a dilatation for an ‘esophageal stricture’ about 5 years ago for similar problems at another institution.’
- 1.1[count noun]A dilated part of a hollow organ or vessel.
- ‘The saccular or cystic form is the most severe type and is characterized by a ballooning of the bronchi with fluid-filled, sac-like dilatations.’
- ‘The best known and most extensively studied baroreceptors are those in the carotid sinuses, dilatations of the carotid arteries in the neck.’
Late Middle English: via Old French from late Latin dilatatio(n-), from the verb dilatare (see dilate).
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