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.
- ob·tu·ra·tion, noun
- ob·tu·ra·tor, noun
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British Dictionary definitions for obturate
(tr) to stop up (an opening, esp the breech of a gun)
- obturation, noun
- obturator, noun
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