dead space

noun

The portion of the respiratory tract that is ventilated but not perfused by pulmonary circulation.

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Meanings

noundead space (countable and uncountable, plural dead spaces)

plural dead spaces · alternative deadspace

  1. countableuncountablemedicineThe portion of the respiratory tract that is ventilated but not perfused by pulmonary circulation.
  2. countableuncountablebroadcastingPicture information that is either masked off or cropped out of viewing area, whether at the top or bottom, or to the sides.
  3. countableuncountablearchitectureAn unusable space, such as an inaccessible void or awkward corner.
Cite this entry
APA

dead space. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/dead%20space

MLA

“dead space.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/dead%20space. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “dead space,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/dead%20space.

Source: dead space on Wiktionary, CC BY-SA 4.0.