HERMETIC
hermetic
Noun
- Hermetic philosophy or practice.
 
Adjective
- Pertaining to or the writings attributed to him.
 - Pertaining to alchemy or occult practices; magical, alchemical.
 - Hermetically sealed.
 - Isolated, away from outside influence.
 
The above text is a snippet from Wiktionary: hermetic
and as such is available under the Creative Commons Attribution/Share-Alike License.