diaphragm in Polish

(anatomy) In mammals, a sheet of muscle separating the thorax from the abdomen, contracted and relaxed in respiration to draw air into and expel air from the lungs.

(acoustics) In a speaker, the thin, semi-rigid membrane which vibrates to produce sound.

(optics, photography) A thin opaque structure with a central aperture, used to limit the passage of light into a camera or similar device.