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