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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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更新时间:2025/2/24 20:35:53