Definition of Hermetically

in an airtight manner, sealed

Examples of Hermetically in a sentence

An astronaut’s suit must be hermetically sealed so his precious oxygen doesn’t escape into the vacuum of space.  🔊

Scuba suits are hermetically sealed so the air stays in the suit and the water stays out of it.  🔊

Because the pressure difference between the outside air and the cabin of an airplane is very high, the cabin is always hermetically sealed.  🔊

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