Definition of obturate in English:

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Pronunciation: /ˈäbt(y)əˌrāt/

Entry from US English dictionary


[with object] formal or technical
Block up; obstruct.
Example sentences
  • Many of today's shooters have tried shooting these old rifles and experienced dismal results when the bullets failed to expand properly and obturate the bore.
  • When it's excessive like that we know that there wasn't even enough pressure to obturate the case at all.
  • This is an indication that pressure is so low the case is not obturating to completely seal the chamber.



Pronunciation: /ˌäbt(y)əˈrāSH(ə)n/
Example sentences
  • On some projectiles, there is a nylon obturating band below the rotating band to help in forward obturation.
  • By placing that plastic ball in the hollow base of the Foster slug, concentric obturation of the slug in the bore is achieved.
  • The second component of this revolution was the reintroduction of breech-loading, made possible by improved technology and especially obturation.


Mid 17th century: from Latin obturat- 'stopped up', from the verb obturare.

For editors and proofreaders

Syllabification: ob·tu·rate

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