noun

airtightness

airtightness, seal

We tested the airtightness of the container.

We tested the airtightness of the container.

The airtightness of the building improves energy efficiency.

The airtightness of the building improves energy efficiency.

((the airtightness of sth.)) the quality of being airtight We tested the airtightness of the seal.

Synonyms: seal, impermeability

From the adjective 'airtight' plus the suffix '-ness', which forms nouns indicating a state or quality.

The suffix '-ness' turns an adjective into a noun describing a quality. So, 'airtightness' is the quality of being 'airtight'.

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