hermetically

1. In a hermetic way.

   With a hermetic seal; so as to be airtight.

   a hermetically sealed jar

   they hermetically seal the jars

   in an airtight manner

2. In an isolated manner.

   living hermetically

1. “Vocabulary” and “grammar” are not hermetically sealed-off categories.

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2. The pressure cooker is a cooking utensil that closes hermetically.

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3. The door was hermetically sealed. No sound from outside reached my ears.

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regular