Definition of hermetic

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< Hermes Trismegistus

hermit >

her·met·ic

r-m

k) KEY also her·met·i·cal (-

-k

l) KEY

ADJECTIVE:

Completely sealed, especially against the escape or entry of air.
Impervious to outside interference or influence: the hermetic confines of an isolated life.
often Hermetic
1. Mythology Of or relating to Hermes Trismegistus or the works ascribed to him.
2. Having to do with the occult sciences, especially alchemy; magical.

ETYMOLOGY:
New Latin hermticus, alchemical, from Medieval Latin Herms (Trismegistus) ; see Hermes Trismegistus

OTHER FORMS:
her·meti·cal·ly (Adverb)

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The American Heritage® Dictionary of the English Language, Fourth Edition.
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