Ob"tu*ra`tor, n. 1. (Ordnance) Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.

2. (Photog.) A camera shutter.

Ob"tu*ra`tor (?), n. [NL., fr. L. obturare to stop up: cf.F. obturateur.] 1. That which closes or stops an opening.

2. (Surg.) An apparatus designed to close an unnatural opening, as a fissure of the palate.

Ob"tu*ra`tor, a. (Anat.) Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve.

Obturator foramen(Anat.), an opening situated between the public and ischial parts of the innominate bone and closed by the obturator membrane; the thyroid foramen.

Ob"tu*ra`tor, n. 1. (Ordnance) Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.

2. (Photog.) A camera shutter.