Definition of dilatation in English:

dilatation

noun

Medicine Physiology
  • 1[mass noun] The action of dilating a vessel or opening or the process of becoming dilated.

    • ‘Between 14 and 19 weeks of pregnancy, a process known as surgical dilatation and evacuation (often referred to as D & E) may be used.’
    • ‘He had undergone a dilatation for an ‘esophageal stricture’ about 5 years ago for similar problems at another institution.’
    • ‘Ten of 12 patients with predominantly extrinsic compression of the central airways underwent dilatation using a high-pressure balloon catheter.’
    • ‘The overall rate of oesophageal perforation after flexible endoscopy involving oesophageal instrumentation, biopsy, or dilatation is 2.6%.’
    • ‘Interventional paediatric cardiology mainly involves dilatation of stenotic vessels or valves and occlusion of abnormal communications.’
    enlargement, increase in size, swelling, distension, dilation
    View synonyms
    1. 1.1[count noun] A dilated part of a hollow organ or vessel.
      • ‘The best known and most extensively studied baroreceptors are those in the carotid sinuses, dilatations of the carotid arteries in the neck.’
      • ‘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.’
      expansion, growth, increase in size, extension, amplification, augmentation, topping up, building up, addition, supplementing
      View synonyms

Origin

Late Middle English: via Old French from late Latin dilatatio(n-), from the verb dilatare (see dilate).

Pronunciation:

dilatation

/ˌdʌɪleɪˈteɪʃ(ə)n/