from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to Hermes Trismegistus.
  • adj. Of or pertaining to alchemy or occult practices.
  • adj. Obscure; secret or unrevealed.
  • adj. Isolated, away from outside influence.
  • adj. Airtight or gas-tight; impervious to air or gases.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of, pertaining to, or taught by, Hermes Trismegistus. Hence: Alchemical; chemic.
  • adj. Of or pertaining to the system which explains the causes of diseases and the operations of medicine on the principles of the hermetic philosophy, and which made much use, as a remedy, of an alkali and an acid.
  • adj. Made perfectly close or air-tight by fusion, so that no gas or spirit can enter or escape. See Note under Hermetically.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to Hermes.
  • [cap. or lowercase] Pertaining to Hermes Trismegistus, or to the theosophy, cosmogony, and later alchemy and astrology associated with his name; alchemic.
  • Of or pertaining to a hermes: as, a hermetic column.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. completely sealed; completely airtight


New Latin hermēticus, alchemical, from Medieval Latin Hermēs (Trismegistus); see Hermes Trismegistus.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Greek god and mythological alchemist Hermes Trismegistus, who was said to possess a magic ability to seal (with spells) treasure chests so that nothing could access their contents. (Wiktionary)


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  • It reminds me of one of my favourite words "Hermeneutic"

    April 10, 2009