Definitions from Wiktionary (obturator)

▸ noun:  (surgery) An object used to obstruct a hole, such as a fissure of the palate.
▸ noun:  (anatomy) The membrane vessels, etc. that close the obturator foramen, or thyroid foramen, a large opening or fenestra in the anterior part of the hip bone.
▸ noun:  (engineering) A valve closure member (disk, gate, plug, etc.).
▸ noun:  (ordnance) Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.
▸ noun:  (photography) A camera shutter.
▸ Also see obturator



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