Diaphragm

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

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

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

Synonyms

Stop

Examples

The new cameras adjust the diaphragm automatically

Electro-acoustic transducer that vibrates to receive or produce sound waves