dead space


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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.

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i. An area within the maximum range of a weapon, radar, or observer that cannot be covered by fire or observation from a particular position because of intervening obstacles, the nature of the ground, the characteristics of the trajectory, or the limitations of the pointing capabilities of the weapons.
ii. An area or zone that is within range of a radio transmitter but in which a signal is not received.
iii. The volume of space above and around a gun or guided missile system into which it cannot fire because of mechanical or electronic limitations.
iv. Dead spots in radio-range reception areas over transmitting stations similar to the cone of silence but lacking normal characteristics like buildup, dead spots, surges, and fades. This phenomenon is likely to be caused by flights over mountains, areas of ore deposits, and other factors. See also cone of silence.
v. The area located between the limit of the surface wave and the point of reception of the first sky wave. It is most common in the HF (high frequency) frequency range. Also called the skip zone.
References in periodicals archive ?
In one study, over-reconstructing medial soft-tissue aspects and obliterating dead space resulted in a reduction of plate exposures from 38% to 8% even in patients reconstructed with lateral defects with a plate and soft tissue.
Potentiation of infection by suture closure of dead space. Am J Surg 1974;127(6):716-20.
Breathing through the additional dead space caused a significant decrease in RER (p = 0.01) and VC[O.sub.2] (p = 0.04).
(9.) Nunn JF, Campbell EJM, Peckett BW Anatomical subdivisions of the volume of respiratory dead space and effect of position of the jaw.
Dead Space 3 for the Xbox 360 includes Kinect support.
Dead Space 3 is a survival horror game that was launched on the current console generation and became an instant hit with gamers.
"We call it 'searching for hidden assets,'" said James Samson, a partner at the real estate firm Samson, Fink & Dubow, and an expert on tapping the value of condo and co-op dead space.
The video game is said to have freaked out players around the world, and even the people who created Dead Space 2 say they get scared playing it.
Using an inferior pedicled musculoperiosteal flap (figure 1, C), we covered the dead space (figure 1, D).
Creative Minx said that it will create brand extensions through merchandising across multiple categories, such as collectibles, peripherals, apparel, and accessories for video game franchises of EA, including The Sims, MySims, Dead Space, Mass Effect 2, Dragon Age, Dante's Inferno(TM) and Army of Two.
He added: "Too often new stadiums are surrounded by empty, dead space and we did not want that in Tottenham.
Global Banking News-19 February 2009-EA Announces Dead Space Extraction Exclusive for the Wii(C)2009 ENPublishing - http://www.enpublishing.co.uk