hermetical
Impervious to air
Hermetical is a somewhat rare variant of hermetic, meaning completely sealed or airtight.
The word traces to Hermes Trismegistus, the legendary founder of alchemy, whose followers supposedly knew how to seal vessels by fusion.
A hermetical seal prevents any exchange with the outside environment.
The figurative sense—isolated from external influence—also applies: a hermetical existence, hermetically sealed from the modern world.
Understood by few
- occultConcealed from view
- crypticObscure in meaning
- esotericAccessible to few
- mysticalOf hidden spiritual significance
abstruse · inscrutable · enigmatic · veiled · hidden · secretive · obscure · clandestine
Impervious to atmosphere
- watertightPrevents liquid from passing
- vacuum-sealedEnclosed without air
- imperviousUnable to be affected
- caulkedFilled joints watertight
gasket · stopper · preservation · canning · jarring · laminated · shrinkwrap · weatherstripping
Set apart, private
- cloisteredSheltered from outside contact
- sequesteredRemoved from contact
- withdrawnEmotionally distant, disengaged
- reclusiveSeeking isolation from others
self-contained · insular · enclosed · impenetrable · cut-off · inaccessible · walled-off · compartmentalized
Complete change of form
- philosopher's stoneLegendary substance enabling transmutation
- magnum opusCreator's supreme achievement
- quintessencePurest embodiment of something
- elixirMythical healing draught
universal solvent · great work · Thoth · laboratory · alembic · caduceus
arcane
Understood by few
mystical · abstruse · inscrutable · enigmatic · veiled · hidden · secretive · obscure · clandestine · initiatory
airtight
Impervious to atmosphere
- watertightPrevents liquid from passing
- vacuum-sealedEnclosed without air
- imperviousUnable to be affected
caulked · gasket · stopper · preservation · canning · jarring · laminated · shrinkwrap · weatherstripping · insulated
secluded
Set apart, private
- cloisteredSheltered from outside contact
- sequesteredRemoved from contact
- withdrawnEmotionally distant, disengaged
reclusive · self-contained · insular · enclosed · impenetrable · cut-off · inaccessible · walled-off · compartmentalized · solitary
transmutation
Complete change of form
- philosopher's stoneLegendary substance enabling transmutation
- magnum opusCreator's supreme achievement
- quintessencePurest embodiment of something
elixir · universal solvent · great work · Thoth · laboratory · alembic · caduceus
hermeticalporous
Allowing passage of fluids
permeable · leaky · unsealed · pervious · breathable
hermeticalopen
Not closed
accessible · exposed · transparent · unsealed · public
hermeticalopen
Not closed
accessible · welcoming · inclusive · engaged · outward-looking
- hermetically sealedCompletely impervious to air
- hermetic sealImpervious joint or closure
- hermetic sealingImpermeable containment method
- hermetically sealClose off completely