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Từ điển Oxford Learners Wordfinder Dictionary
diaphragm


noun
1. a mechanical device in a camera that controls size of aperture of the lens (Freq. 5)
- the new cameras adjust the diaphragm automatically
Syn:
stop
Hypernyms:
mechanical device
Hyponyms:
iris, iris diaphragm
Part Holonyms:
camera, photographic camera
2. (anatomy) a muscular partition separating the abdominal and thoracic cavities;
functions in respiration (Freq. 2)
Syn:
midriff
Topics:
anatomy, general anatomy
Hypernyms:
muscular structure, musculature, muscle system, membrane, tissue layer
Part Holonyms:
torso, trunk, body
3. 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
Syn:
pessary, contraceptive diaphragm
Hypernyms:
contraceptive, preventive, preventative, contraceptive device, prophylactic device, birth control device
4. electro-acoustic transducer that vibrates to receive or produce sound waves
Hypernyms:
disk, disc
Part Holonyms:
electro-acoustic transducer

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