diaphragm

Meanings

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

Synonyms

contraceptive diaphragm, midriff, pessary, stop