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obturate

[ob-tuh-reyt, -tyuh-]
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verb (used with object), ob·tu·rat·ed, ob·tu·rat·ing.
  1. to stop up; close.
  2. Ordnance. to close (a hole or cavity) so as to prevent a flow of gas through it, especially the escape of explosive gas from a gun tube during firing.
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Origin of obturate

1550–60; < Latin obtūrātus, past participle of obtūrāre to block, stop up
Related formsob·tu·ra·tion, nounob·tu·ra·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for obturator

obturate

verb
  1. (tr) to stop up (an opening, esp the breech of a gun)
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Derived Formsobturation, nounobturator, noun

Word Origin

C17: from Latin obtūrāre to block up, of obscure origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

obturator in Medicine

obturator

(ŏbtə-rā′tər)
n.
  1. A structure, such as the soft palate, that closes an opening in the body.
  2. A prosthetic device that serves to close an opening or cleft, especially in the palate.
  3. A stylus or removable plug used during the insertion of many tubular instruments.
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obturate

(ŏbtə-rāt′)
v.
  1. To close or obstruct.
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Related formsob′tu•ration n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.