HERMETIC
hermetic
(adjective) completely sealed; completely airtight
Source: WordNet® 3.1
Etymology
Adjective
hermetic (comparative more hermetic, superlative most hermetic)
(chiefly with capital initial) Pertaining to Hermes Trismegistus or the writings attributed to him.
Pertaining to alchemy or occult practices; magical, alchemical.
Hermetically sealed.
Isolated, away from outside influence.
Source: Wiktionary
Her*met"ic, Her*met"ic*al, a. Etym: [F. hermétique. See Note under
Hermes, 1.]
1. Of, pertaining to, or taught by, Hermes Trismegistus; as, hermetic
philosophy. Hence: Alchemical; chemic. "Delusions of the hermetic
art." Burke.
The alchemists, as the people were called who tried to make gold,
considered themselves followers of Hermes, and often called
themselves Hermetic philosophers. A. B. Buckley.
2. 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; as, hermetic medicine.
3. Made perfectly close or air-tight by fusion, so that no gas or
spirit can enter or escape; as, an hermetic seal. See Note under
Hermetically. Hermetic art, alchemy.
– Hermetic books. (a) Books of the Egyptians, which treat of
astrology. (b) Books which treat of universal principles, of the
nature and orders of celestial beings, of medicine, and other topics.
Source: Webster’s Unabridged Dictionary 1913 Edition