Diaphragm meaning

noun

1. a mechanical device in a camera that controls size of aperture of the lens

   “the new cameras adjust the diaphragm automatically”

   Synonymsstop

2. (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration

   Synonymsmidriff

3. 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

   Synonymspessarycontraceptive diaphragm

4. electro-acoustic transducer that vibrates to receive or produce sound waves