English dictionary

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English noun: diaphragm

1. diaphragm (artifact) a mechanical device in a camera that controls size of aperture of the lens

SamplesThe new cameras adjust the diaphragm automatically.


Broader (hypernym)mechanical device

Narrower (hyponym)iris, iris diaphragm

Part meronymcamera, photographic camera

2. diaphragm (body) (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration


Broader (hypernym)membrane, muscle system, muscular structure, musculature, tissue layer

Part meronymbody, torso, trunk

Domain categoryanatomy, general anatomy

3. diaphragm (artifact) 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

Synonymscontraceptive diaphragm, pessary

Broader (hypernym)birth control device, contraceptive, contraceptive device, preventative, preventive, prophylactic device

4. diaphragm (artifact) electro-acoustic transducer that vibrates to receive or produce sound waves

Broader (hypernym)disc, disk

Part meronymelectro-acoustic transducer

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