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Definition of: obturate
(ob′tyə·rāt, -tə-) v.t. ·rat·ed, ·rat·ing
1. To close or stop up (an opening or hole).
2. In ordnance, to close or seal (a gun breech) to prevent the escape of gas in firing. [<L obturatus, pp. of obturare stop up]
—ob′tu·ra′tion noun
—ob′tu·ra′tor noun
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