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dead space |
Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia, Hutchinson | 0.02 sec. |
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dead space [′ded ‚spās] (anatomy) The space in the trachea, bronchi, and other air passages which contains air that does not reach the alveoli during respiration, the amount of air being about 140 milliliters. Also known as anatomical dead space. (medicine) A cavity left after closure of a wound. (physiology) A calculated expression of the anatomical dead space plus whatever degree of overventilation or underperfusion is present; it is alleged to reflect the relationship of ventilation to pulmonary capillary perfusion. Also known as physiological dead space. (thermodynamics) A space filled with gas whose temperature differs from that of the main body of gas, such as the gas in the capillary tube of a constant-volume gas thermometer. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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About 1000 psi of backpressure (plastic pressure, not hydraulic pressure) is critical to completely fill the screw channel and minimize the chance of material being left behind in a dead space on the screw. Look at how much dead space you have in your warehouse. Almost all blobs create a zone of dead space round them. |
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