diaphragm /dīˈə-fram, -frəm/

1. A thin partition or dividing membrane
2. The midriff, the muscular structure separating the chest from the abdomen (anatomy)
3. A metal plate with an adjustable central hole, for controlling the amount of light admitted in optical instruments
4. A strengthening or stiffening plate (engineering)
5. (in a telephone, etc) a thin vibrating disc that converts electrical signals into sound waves and vice versa
6. A contraceptive device, a thin rubber or plastic cap placed over the neck of the uterus

diaphragmal /-fragˈ/ adjective

diaphragmatic /-frag-matˈ/ adjective

diaphragmatīˈtis /-frag-/ noun

Inflammation of the diaphragm

diaphragm pump noun

A pump that has a flexible membrane instead of a piston

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