Diaphragm Definition

dīə-frăm
diaphragms
noun
diaphragms
The partition of muscles and tendons that separates the chest cavity from the abdominal cavity; midriff.
Webster's New World
Any membrane or partition that separates one thing from another.
Webster's New World
A dividing wall at the node of a plant stem.
Webster's New World
A small, flexible contraceptive device of rubber or plastic that fits over the cervix of the uterus.
Webster's New World
A thin, flexible disk or cone that vibrates in response to sound waves to produce electrical signals, as in a microphone, or that vibrates in response to electrical signals to produce sound waves, as in a speaker.
Webster's New World
Synonyms:
midriffcontraceptive diaphragmpessarystop
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verb

(optics, photography) To reduce lens aperture using an optical diaphragm.

Wiktionary

To act as a diaphragm, for example by vibrating.

Wiktionary

Other Word Forms of Diaphragm

Noun

Singular:
diaphragm
Plural:
diaphragms

Origin of Diaphragm

  • Middle English diafragma from Late Latin diaphragma midriff from Greek partition from diaphrassein to barricade dia- intensive pref. dia– phrassein phrag- to enclose

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek διάφραγμα (diáphragma, “partition”), from διά (dia, “across”) and φράγμα (phragma, “barrier”), from the verb φράσσω (phrasso)..

    From Wiktionary

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