DICT.TW Dictionary Taiwan

 Di·a·phragm n.
 1. A dividing membrane or thin partition, commonly with an opening through it.
 2. Anat. The muscular and tendinous partition separating the cavity of the chest from that of the abdomen; the midriff.
 3. Zool. A calcareous plate which divides the cavity of certain shells into two parts.
 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.
 5. Mach. A partition in any compartment, for various purposes.
 Diaphragm pump, one in which a flexible diaphragm takes the place of a piston.
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