diaphragm
breathing muscle / contraceptive device / camera aperture
Noun
pl: diaphragms
The term describes a physical barrier or partition that regulates flow, whether it be air in the body, light in a lens, or biological material in contraception. It carries a technical, anatomical, or mechanical connotation depending on the field of use. As a noun, it follows standard English countability rules. In medical or optical contexts, it refers to a specific organ or component, while in contraceptive contexts, it refers to a specific device.
Meanings
Noun
A dome-shaped muscular partition separating the thorax from the abdomen in mammals, which contracts to pull air into the lungs.
"The diaphragm contracts during inhalation to create a vacuum in the chest cavity."