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

• stop

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

• midriff

3. (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

• contraceptive diaphragm
• pessary

1. (noun) (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration

• anatomy
• general anatomy

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

• mechanical device

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

• membrane
• tissue layer
• muscle system
• muscular structure
• musculature

3. (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

• birth control device
• contraceptive
• contraceptive device
• preventative
• preventive
• prophylactic device

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

• disc
• disk

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

• iris
• iris diaphragm