(anatomy) The pelvic diaphragm is composed of muscles that separate the pelvic cavity above from the perineal region below.

An adjustable diaphragm by which the diameter of an approximately circular opening may be controlled, as for regulating the aperture of a lens; it consists of a number of movable thin curved plates fastened at regular intervals around the inside of a ring, the positions of which are simultaneously adjusted by a single knob on the outside of the lens. It is used in cameras and microscopes.

plural of iris diaphragm

plural of pelvic diaphragm

(chemistry) An electrolytic cell based on a permeable diaphragm.

plural of diaphragm cell

plural of Potter-Bucky diaphragm

(medicine) A grid of lead strips that can be repositioned to reduce visual artifacts on an X-ray caused by secondary radiation.

Of, pertaining to, or using a diaphragm.

By use of the diaphragm; in a diaphragmatic way / (Of breathing) by expanding/contracting the lungs by lowering/raising the diaphragm, instead of by expanding the chest