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say it: DAHY-uh-fram
diaphragm is a noun meaning "a mechanical device in a camera that controls size of aperture of the lens". It is pronounced /ˈdaɪəˌfɹæm/ — DAHY-uh-fram. It carries 4 recorded senses.
a mechanical device in a camera that controls size of aperture of the lens
“the new cameras adjust the diaphragm automatically”
(anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
anatomy
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
electro-acoustic transducer that vibrates to receive or produce sound waves
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for diaphragm come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.