What is another word for gas-tight?
Pronunciation: [ɡˈastˈa͡ɪt] (IPA) 
Gas-tight is a term that refers to something being completely airtight and impenetrable to any gas or vapor. There are several synonyms that can be used to describe something that is gas-tight. One such synonym is hermetically sealed. A hermetically sealed object or container is one that is completely airtight and impervious to gas or vapor. Another synonym for gas-tight is airtight, which means that there is no way for air or gas to pass through a material or container. Some other words that can be used as synonyms for gas-tight include impermeable, tightly sealed, and nonporous. Overall, gas-tight is a term that describes something that is completely impenetrable to gas or vapor and there are several words that can be used to describe this quality.
