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airtight
01
having no weak points
02
sealed or closed completely to prevent air or gas from entering or escaping
air
tight
airtight
adj
Example
The submarine's hull must be airtight to withstand the pressure of deep-sea dives.
The room was so airtight that the heat began to suffocate everyone inside.
The plastic bag was sealed using a ziplock mechanism, ensuring the contents remained airtight.
The container was airtight, keeping the food fresh for an extended period.
Coordinating with the nickelback, the dimeback ensured the secondary was airtight.
