Definition: a mechanical device in a camera that controls size of aperture of the lens
Usage: the new cameras adjust the diaphragm automatically
Main entry: diaphragm
Definition: electro-acoustic transducer that vibrates to receive or produce sound waves
Main entry: diaphragm, contraceptive diaphragm, pessary
Definition: 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
Main entry: midriff, diaphragm
Definition: (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration