Meaning of diaphragm
Definition of diaphragm
(noun)
a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"
(anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix