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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An organic structure, such as the soft palate, that closes an opening in the body.
  • n. A prosthetic device serving to close an opening in the body.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An object used to obstruct a hole.

from the GNU version of the Collaborative International Dictionary of English

  • n. That which closes or stops an opening.
  • n. An apparatus designed to close an unnatural opening, as a fissure of the palate.
  • n. Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.
  • n. A camera shutter.
  • adj. Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen.

from The Century Dictionary and Cyclopedia

  • n. That which closes or stops up an entrance, cavity, or the like.
  • n. In photography, the instantaneous shutter of a camera.
  • n. Anything used to close the orifice of a hollow instrument, such as a speculum or catheter, during its introduction.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a prosthesis used to close an opening (as to close an opening of the hard palate in cases of cleft palate)


From Latin obtūrō ("to stop, block up"). (Wiktionary)



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