- 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.
verb (used with object)
Origin of diaphragm
Related Words for diaphragmcontraceptive, abstinence, abortion, condom, pill, vasectomy, hormone, sponge, shield, prophylactic, armor, foam, jelly, rubber, safety, coil, ring, preventative, loop, IUD
Examples from the Web for diaphragm
Contemporary Examples of diaphragm
The blade pierced his liver and diaphragm, missing his heart and aorta by a fraction of an inch.Thank God the Murrysville School Attack Wasn’t Guns
April 9, 2014
After Mrs. Butterfield retreats upstairs, she goes to have sex with her husband, only to realize that Jade has her diaphragm.What the New ‘Endless Love’s Fireplace Sex Scene Is Missing
February 13, 2014
Could prescription birth control—whether the pill, an IUD, or a diaphragm—soon be free of cost for most American women?The Coming Birth Control Battle
July 12, 2010
Historical Examples of diaphragm
The voice was concentrated upon it by means of a mouthpiece and a diaphragm.Heroes of the Telegraph
The character of the diaphragm is best observed in year-old canes.Manual of American Grape-Growing
U. P. Hedrick
Underneath the stage, which is pierced by a circular aperture, is a diaphragm.The Story of the Cotton Plant
It has a diaphragm provided centrally with a blunt pin, or stylus.Practical Mechanics for Boys
J. S. Zerbe
The pleura and diaphragm also showed a good deal of disease and some adhesion.Cattle and Their Diseases
- a porous plate or cylinder dividing an electrolytic cell, used to permit the passage of ions and prevent the mixing of products formed at the electrodes
- a semipermeable membrane used to separate two solutions in osmosis
Word Origin for diaphragm
late 14c., from Late Latin diaphragma, from Greek diaphragma "partition, barrier, muscle which divides the thorax from the abdomen," from diaphrassein "to barricade," from dia- "across" (see dia-) + phrassein "to fence or hedge in." The native word is midriff. Meaning "contraceptive cap" is from 1933.