permeability (noun)

1. In the gothic novel, the author vividly describes the old mansion's permeability to the ghostly presence that roams its corridors.

2. The construction of the Great Wall of China exhibited the Chinese civilization's understanding of permeability in defense strategies.

3. In the futuristic world of the novel, humans have developed suits with enhanced permeability that allow them to breathe underwater.

4. The anime depicts a magical barrier with low permeability, making it difficult for the characters to pass through and escape danger.