Definition of gas-tight in English:

gas-tight

Syllabification: gas-tight
Pronunciation: /ˈɡasˌtīt
 
/

adjective

Sealed so as to prevent the leakage of gas.
More example sentences
  • To preserve the pristine lunar dust and fragments, some samples were placed into gas-tight cans sealed with a knife-edge-to-metal seal.
  • The first crews in gas-tight suits entered the station at 12.26 pm and the first ‘walking wounded’ emerged about six minutes later.
  • The epicotyl was surrounded with a gas-tight soft rubber fitting to a drilled cap, which was placed onto the tube.

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