Definitions of diaphragm:
  • noun:   a mechanical device in a camera that controls size of aperture of the lens
    Example: "The new cameras adjust the diaphragm automatically"
  • noun:   electro-acoustic transducer that vibrates to receive or produce sound waves
  • 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
  • noun:   (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration

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Book See diaphragm used in context: 6 rhymes, several books and articles.

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