Meaning of airtight

1. The container was airtight, keeping the cookies fresh for days.
2. Make sure the lid is airtight before storing the leftovers in the refrigerator.
3. The windows in the house were airtight, preventing any drafts from coming in.
4. The airtight seal on the jar ensured that the pickles stayed crisp.
5. The astronaut's suit had to be completely airtight to protect him in space.
6. The plastic wrap was not airtight, so the food spoiled quickly.
7. The contractor made sure the new windows were airtight to improve the energy efficiency of the house.
8. The scientist sealed the samples in airtight containers to prevent contamination.
9. The vacuum-sealed bag kept the clothes airtight during shipping.
10. The airtight security measures at the event ensured that no unauthorized individuals could enter.