Dictionary

diaphragm

noun di·a·phragm \ˈdī-ə-ˌfram\

medical : a large flat muscle that separates the lungs from the stomach area and that is used in breathing

: a device that controls the amount of light passing through the lens of a camera

: a device shaped like a cup that is placed in the vagina to prevent pregnancy

Full Definition of DIAPHRAGM

1
:  a body partition of muscle and connective tissue; specifically :  the partition separating the chest and abdominal cavities in mammals
2
:  a dividing membrane or thin partition especially in a tube
3
a :  a more or less rigid partition in the body or shell of an invertebrate
b :  a transverse septum in a plant stem
4
:  a device that limits the aperture of a lens or optical system — compare iris diaphragm
5
:  a thin flexible disk (as in a microphone or loudspeaker) that vibrates when struck by sound waves or that vibrates to generate sound waves
6
:  a molded cap usually of thin rubber fitted over the uterine cervix to act as a mechanical contraceptive barrier
di·a·phrag·mat·ic \ˌdī-ə-frə(g)-ˈma-tik, -ˌfrag-\ adjective
di·a·phrag·mat·i·cal·ly \-ˈma-ti-k(ə-)lē\ adverb
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Origin of DIAPHRAGM

Middle English diafragma, from Late Latin diaphragma, from Greek, from diaphrassein to barricade, from dia- + phrassein to enclose
First Known Use: 14th century

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral
DIAPHRAGMATIC Defined for Kids

diaphragm

noun di·a·phragm \ˈdī-ə-ˌfram\

Definition of DIAPHRAGM for Kids

1
:  a muscular wall that separates the lungs from the stomach area and assists in breathing in
2
:  a thin disk (as in a microphone) that vibrates when sound strikes it
Medical Dictionary

diaphragm

noun di·a·phragm \ˈdī-ə-ˌfram\

Medical Definition of DIAPHRAGM

1
:  a body partition of muscle and connective tissue; specifically :  the partition separating the chest and abdominal cavities in mammals—see pelvic diaphragm, urogenital diaphragm
2
:  a device that limits the aperture of a lens or optical system
3
:  a molded cap usually of thin rubber fitted over the uterine cervix to act as a mechanical contraceptive barrier

Illustration of DIAPHRAGM

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