单词 | dilatation |
释义 | dilatation —dilatational, adj. /dil'euh tay"sheuhn, duy'leuh-/, n. 1. a dilated formation or part. 2. Pathol. an abnormal enlargement of an aperture or a canal of the body. 3. Surg. a. an enlargement made in a body aperture or canal for surgical or medical treatment. b. a restoration to normal patency of an abnormally small body opening or passageway, as of the anus or esophagus. 4. Mech. the increase in volume per unit volume of a homogeneous substance. Also, dilation. [1350-1400; ME ( < OF) < L dilatation- (s. of dilatatio), equiv. to dilatat(us) spread out (ptp. of dilatare to DILATE) + ion- -ION] |
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