hermetic

Meanings

1. 1
   adj

   Completely sealed so that no air or gas can pass through; airtight.

   The samples were stored in a hermetic container to keep out moisture.

2. 2
   adj

   Closed off from outside influence; isolated.

   The artists' commune lived in almost hermetic seclusion from the modern world.

From Medieval Latin hermeticus, irregular derivation of Hermes Trismegistus, the god and mythological alchemist, said to possess a magic ability to seal treasure chests so that nothing could access their contents.

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