Dilator
WordNet

noun


(1)   A surgical instrument that is used to dilate or distend an opening or an organ
(2)   A drug that causes dilation
(3)   A muscle or nerve that dilates or widens a body part
WiktionaryText

Noun



  1. Any nerve or muscle that causes part of the body to dilate
  2. Any drug that causes such dilation
  3. An instrument used to dilate an orifice or cavity
 
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