One entry found for diaphragm.

Main Entry: di·a·phragm
Pronunciation: d--fram
Function: noun
1 : a sheet of muscle that separates the cavities of the chest and abdomen in mammals
2 : a device that limits the size of an opening in order to control the amount of light passing through a lens (as of a camera or microscope)
3 : a thin flexible disk that vibrates (as in a microphone)
4 : a cup-shaped device usually of thin rubber that fits over the cervix of the uterus and acts to prevent pregnancy by keeping sperm from reaching the egg
- di·a·phrag·mat·ic /d--fr(g)-mat-ik, -frag-/ adjective