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\her-MET-ik\

ⓐⓓⓙⓔⓒⓣⓘⓥⓔ

1 : relating to or characterized by occultism or abstruseness ~> recondite

2 a : airtight

b : impervious to external influence

c : recluse, solitary

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• The infomercial claimed that the new containers used modern technology to guarantee a hermetic seal that would keep food fresh for months.

• "Later, as Western Europe welcomed foreign guest workers, Central Europe remained in the hermetic enclosure of Soviet rule." - Sara Miller Llana, The Christian Science Monitor, 10 Mar. 2016