obturation

== English == === Etymology === From Latin obtūrātiō. Compare French obturation. === Pronunciation === === Noun === obturation (countable and uncountable, plural obturations) The act of stopping up, or closing, an opening. (firearms) The process of a bullet expanding under pressure to fit the bore of the firearm, or a cartridge case expanding under pressure to seal the chamber. ==== Derived terms ==== ==== Related terms ==== obturate obturative == French == === Etymology === From Latin obtūrātiō. === Pronunciation === IPA(key): /ɔp.ty.ʁa.sjɔ̃/ === Noun === obturation f (plural obturations) sealing; closing up blockage a dental filling ==== Derived terms ==== vitesse d'obturation ==== Related terms ==== === Further reading === “obturation”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012