a flat circular plate | a mechanical device in a camera that controls size of aperture of the lens |
sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove | electro-acoustic transducer that vibrates to receive or produce sound waves |
(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored | 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 |
something with a round shape resembling a flat circular plate | (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration |