Noun
(physiology) The portion of the respiratory tract that is ventilated but not perfused by pulmonary circulation.
(film) Picture information that is either masked off or cropped out of viewing area, whether at the top or bottom, or to the sides.
Source: en.wiktionary.orgRazer also cleverly places the caps locks and other indicator lighting right above the arrow keys, an area of dead space that often goes underutilized. Source: Internet
The air then flows through the anatomical dead space of a highly vascular trachea (c. Source: Internet
The vehicle is designed to minimize firepower dead space and the vehicles weapons can be depressed to a maximum of 12°. Source: Internet
It's helpful while using CarPlay because it fills in dead space, but on a few occasions, it actually got in the way of buttons I needed to tap. Source: Internet