1. diaphragm - noun
· a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"
Synonym(s): stop
Hypernym(s): mechanical_device
2. diaphragm - noun
· (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
Synonym(s): midriff
Hypernym(s): muscular_structure, musculature, muscle_system, membrane, tissue_layer
3. diaphragm - 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
Synonym(s): pessary, contraceptive_diaphragm
Hypernym(s): contraceptive, preventive, preventative, contraceptive_device, prophylactic_device, birth_control_device
4. diaphragm - noun
· electro-acoustic transducer that vibrates to receive or produce sound waves
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