diaphragm
English Thesaurus
1. a mechanical device in a camera that controls size of aperture of the lens (noun.artifact)
| hypernym | : | mechanical device, |
| definition | : | mechanism consisting of a device that works on mechanical principles (noun.artifact) |
| hyponym | : | iris, iris diaphragm, |
| definition | : | diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening (noun.artifact) |
| part meronym | : | camera, photographic camera, |
| definition | : | equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other) (noun.artifact) |
2. electro-acoustic transducer that vibrates to receive or produce sound waves (noun.artifact)
| hypernym | : | disc, disk, |
| definition | : | a flat circular plate (noun.artifact) |
| part meronym | : | electro-acoustic transducer, |
| definition | : | a transducer that converts electrical to acoustic energy or vice versa (noun.artifact) |
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 (noun.artifact)
4. (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration (noun.body)
| hypernym | : | membrane, tissue layer, |
| definition | : | a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants (noun.body) |
| part meronym | : | body, torso, trunk, |
| definition | : | the body excluding the head and neck and limbs (noun.body) |
| domain category | : | anatomy, general anatomy, |
| definition | : | the branch of morphology that deals with the structure of animals (noun.cognition) |
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