Also means
security vestibule
Usage Note
Sas refers to an airlock in a spacecraft or submarine, or to the double-door security entry chamber found in banks and secure buildings. It also means a sluice chamber in canal lock systems. The word is spelled the same in singular and plural (un sas, des sas). In everyday life, many French buildings have a sas d'entrée — a small vestibule between two sets of doors.
Examples
"Les astronautes ont franchi le sas pour sortir dans l'espace."
Natural Translation
The astronauts passed through the airlock to go into space.
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