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DIAPHRAGM - Definiția din dicționar

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Di"a*phragm (?), n. [L. diaphragma, Gr. &unr_;, fr. &unr_; to fence by a partition wall; dia` through + &unr_;, &unr_;, to fence, inclose; prob. akin to L. fareire to stuff: cf. F. diaphragme. See Farce.] 1. A dividing membrane or thin partition, commonly with an opening through it.
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2. (Anat.) The muscular and tendinous partition separating the cavity of the chest from that of the abdomen; the midriff.
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3. (Zo&ö;l.) A calcareous plate which divides the cavity of certain shells into two parts.
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4. (Opt.) A plate with an opening, which is generally circular, used in instruments to cut off marginal portions of a beam of light, as at the focus of a telescope.
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5. (Mach.) A partition in any compartment, for various purposes.
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Diaphragm pump, one in which a flexible diaphragm takes the place of a piston.
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