Hermetic
[hər-MED-ik]
Part of speech: adjective
Origin: Latin, 17th century
1.
(Of a seal or closure) Complete and airtight.
2.
Insulated or protected from outside influences.
Examples of Hermetic in a sentence
"Thanks to the hermetic seal on the jar, the jam was still good eight months after it was canned."
"The locker room atmosphere was hermetic: The only topic allowed was hockey strategy."
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