1. a large muscle that separates the chest cavity from the abdominal cavity and helps with breathing
Usage: anatomy
2. a thin disk that vibrates to produce or detect sound in devices like microphones and speakers
Usage: technical
3. a flexible dome-shaped contraceptive device inserted into the vagina
Usage: medical

Examples

• The diaphragm contracts when you breathe in, pulling air into your lungs.
• Hiccups occur when the diaphragm muscle spasms involuntarily.
• The microphone’s diaphragm converts sound waves into electrical signals.
• She replaced the torn diaphragm in the old speaker.
• The doctor recommended a diaphragm as a birth control option.
• The pump’s rubber diaphragm had developed a small leak.
• Deep breathing exercises help strengthen your diaphragm.