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Definitions of diaphragm
  1. noun
    a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
  2. noun
    (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration

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  3. noun
    a mechanical device in a camera that controls size of aperture of the lens
    "the new cameras adjust the diaphragm automatically"

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  4. noun
    electro-acoustic transducer that vibrates to receive or produce sound waves
Explanation of diaphragm
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