Definitions For Diaphragm

noun

• A mechanical device in a camera that controls size of aperture of the lens
• Electro-acoustic transducer that vibrates to receive or produce sound waves
• 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 large flat muscle that separates the lungs from the stomach area and that is used in breathing
• A device that controls the amount of light passing through the lens of a camera
• A device shaped like a cup that is placed in the vagina to prevent pregnancy