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1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Ob·tu·rate v. t.  [imp. & p. p. Obturated p. pr. & vb. n. Obturating ]  To stop or close, as an opening; specif., Ordnance, to stop (a gun breech) so as to prevent the escape of gas in firing.
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