hermetically

adverb
her·​met·​i·​cal·​ly | \ (ˌ)hər-ˈme-ti-k(ə-)lē How to pronounce hermetically (audio) \

Definition of hermetically

: in an airtight manner : so as to be completely airtight usually used in the phrase hermetically sealed They have their digitally alarmed, healthfully air-conditioned, hermetically sealed knotty-pine wine cellars …— Alan RichmanDesigned for field use, the unit has a hermetically sealed touch keypad with six widely spaced keys suited for gloved operation.Oil & Gas Journal… the entire manufacturing process takes place inside "clean rooms"—hermetically sealed factories where elaborate filtration systems keep the air a thousand times purer than in the best hospital operating rooms.— Michael Rothschild(figurative) … creating a world so self-absorbed, so hermetically sealed, that its connection to public life is severed altogether …— Ella Taylor(figurative) Control was always Jobs' approach to achieving excellence—Apple's beautiful, hermetically sealed ecosystem of products is the quintessence of control …— Lev Grossman

First Known Use of hermetically

1605, in the meaning defined above

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Time Traveler for hermetically

The first known use of hermetically was in 1605

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Britannica English: Translation of hermetically for Arabic Speakers

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