diaphragm: Meaning and Definition of
Pronunciation: (dī'u-fram"), [key]
- a muscular, membranous or ligamentous wall separating two cavities or limiting a cavity.
- the partition separating the thoracic cavity from the abdominal cavity in mammals.
- a porous plate separating two liquids, as in a galvanic cell.
- a semipermeable membrane.
- a thin disk that vibrates when receiving or producing sound waves, as in a telephone, microphone, speaker, or the like.
- Also calleda thin, dome-shaped device, usually of rubber, for wearing over the uterine cervix during sexual intercourse to prevent conception.
- a plate with a hole in the center or a ring that is placed on the axis of an optical instrument, as a camera, and that controls the amount of light entering the instrument.
- a plate or web for stiffening metal-framed constructions.
- to furnish with a diaphragm.
- to reduce the aperture of (a lens, camera, etc.) by means of a diaphragm.
- diaphragm (Thesaurus)