Medicine/Medical. a small, expandable tube used for inserting in a blocked vessel or other part.

1960–65; origin uncertain

stent, stint. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
stent (stɛnt)
med a tube of plastic or sprung metal mesh placed inside a hollow tube to reopen it or keep it open; uses in surgery include preventing a blood vessel from closing, esp after angioplasty, and assisting healing after an anastomosis
[C19: after Charles Stent (1807--85), English dentist]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

"tube implanted temporarily," 1964, named for Charles T. Stent (1807-85), Eng. dentist.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

stent (stěnt)

  1. A device that is used to maintain a bodily orifice or cavity during skin grafting, or to immobilize a skin graft following placement.

  2. A slender thread, rod, or catheter placed within the lumen of tubular structures, such as a blood vessel, to provide support during or after anastomosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Stent was giving directions in a clear, high-pitched voice.
He also came up with the heart stent that keeps our current vice president's
  ticker going.
The majority of these patients also have a drug-eluting stent put in at the
  time of the procedure.
Then a stent containing another balloon is inserted into the artery.
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