noun
a mechanical device in a camera that controls size of aperture of the lens
Synonyms
Examples
- the new cameras adjust the diaphragm automatically
noun
(anatomy) a muscular partition separating the abdominal and thoracic cavities
Synonyms
Examples
- functions in respiration
noun
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic
Synonyms
Examples
- it is filled with spermicide and fitted over the uterine cervix
noun
electro-acoustic transducer that vibrates to receive or produce sound waves