diaphragm

1. (noun) controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"
Synonyms: stop
Related Words: iris, iris diaphragm, mechanical device

2. (noun) vibrates to receive or produce sound waves
Related Words: disc, disk

3. (noun) 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
Synonyms: contraceptive diaphragm, pessary
Related Words: birth control device, contraceptive, contraceptive device, preventative, preventive, prophylactic device

4. (noun) (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
Synonyms: midriff
Related Words: membrane, muscle system, muscular structure, musculature, tissue layer



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