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hermetic

her·met·ic

hermetic

 
pronunciation:
hr me tihk
part of speech: adjective
definition 1: preventing or sealed to prevent the influx or escape of air; airtight.
The hermetic seal between the two panes of glass keeps air from entering between them.
definition 2: protected from external pressures or influences.
It was easy to forget about the war on this hermetic island.
definition 3: (sometimes cap.) relating to the occult sciences, esp. alchemy.
His interest extended beyond what we would call science into areas of the Hermetic Arts.
derivations: hermetical (adj.), hermetically (adv.)