dead-air space
- noun
- /ˈdɛd ɛr speɪs/
- Specialized
- The attic has a lot of dead-air space.
Examples
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The walls are constructed with a dead-air space between the layers for extra insulation.
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A large dead-air space in the attic can help regulate the temperature of the house.
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Make sure there is no dead-air space behind the refrigerator, or it won't cool efficiently.
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Many buildings contain dead-air spaces for insulation.
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The engineer explained that the dead-air space between the windows helps keep the house warm in winter.
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Installing insulation in the dead-air space of the attic can significantly improve energy efficiency.
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Avoid placing furniture in a dead-air space, as it can hinder proper airflow and ventilation.
Antonyms
How Ventilated
- Specialized
- Specialized
Surface Forms
Morphology
dead-air + space
The phrase is transparently compositional: 'dead' (inactive/stagnant) + 'air' (the gas) + 'space' (an area) yields an area of stagnant or non‑circulating air. Although used in technical contexts, this adjective–noun combination follows normal English compounding patterns, so a B1 learner who knows the constituents can infer the meaning.
Etymology
Dead-air space comes from the simple image of a small pocket of air that is dead — not moving — inside a space. That still air traps heat and stops air from moving, so people began to call any area with no airflow a 'dead-air space', which is why the phrase means an area with no air circulation.