Share this entry

obturate Syllabification: ob·tu·rate
Pronunciation: /ˈäbt(y)əˌrāt/

Definition of obturate in English:


[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.


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



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.

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coiffeur
Pronunciation: kwäˈfər
a hairdresser