from The Century Dictionary.
- Impervious to air.
- To protect from injurious action of the air or of some of its ingredients, as by a suitable varnish applied to the material to be protected.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
from Wiktionary, Creative Commons Attribution/Share-Alike License
To-day a copy of a newspaper of any date between 1890 and 1970 is a rare and precious thing, which has to be protected from carbonization in an air-proof wrapper.
• Keep foods tightly wrapped in air-proof and moisture-proof wraps and containers.
The partitions, C and C ', are likewise of refractory brick, and are rendered as air-proof as possible.
No healthy clothing is absolutely air-proof, the access of the air through it being necessary to our health and comfort.
Owing to the importance of using the tonic, I have arranged to make it as inexpensive as possible and am prepared to furnish it (to users of the Cascade only) in one pound air-proof cans at the price of $1.00; by mail twenty cents extra.
Crackers went well with this; and later on the coffee being boiled, they enjoyed a fragrant cup of Java, together with some cakes that had been put up in air-proof packages, and were as fresh as the day they left the New York bakery.
Into a small house, thoroughly air-proof, were brought bedclothes, clothing, and other articles which had been contaminated by yellow fever patients.
These, with crackers, cheese, some cakes done up in air-proof packages, and tea constituted the supper that was finally placed before them.
The clothes were put up in air-proof tin uniform cases, small enough to be easily carried by a porter and secure enough to keep out the millions of ants that were expected to seek habitation in them.
We were, although we did not know it, under an air-proof canopy, and were slowly but surely exhausting the life-giving oxygen around us, and replacing it by poisonous carbonic acid gas.