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[ob-tuh-reyt, -tyuh-] /ˈɒb təˌreɪt, -tyə-/
verb (used with object), obturated, obturating.
to stop up; close.
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.
Origin of obturate
1550-60; < Latin obtūrātus, past participle of obtūrāre to block, stop up
Related forms
obturation, noun
obturator, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for obturator


(transitive) to stop up (an opening, esp the breech of a gun)
Derived Forms
obturation, noun
obturator, 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
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obturator in Medicine

obturator ob·tu·ra·tor (ŏb'tə-rā'tər, -tyə-)

  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.

obturate ob·tu·rate (ŏb'tə-rāt', -tyə-)
v. ob·tu·rat·ed, ob·tu·rat·ing, ob·tu·rates
To close or obstruct.

ob'tu·ra'tion n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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