hermetically
adverb
her·met·i·cal·ly
(ˌ)hər-ˈme-ti-k(ə-)lē 
: 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 Richman
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
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
Michael Rothschild(figurative) … creating a world so self-absorbed, so hermetically sealed, that its connection to public life is severed altogether …—Ella Taylor
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
Lev GrossmanExamples of hermetically in a Sentence
Recent Examples on the Web
Unlike some of Dubai’s city centre skyscrapers, where rooms are hermetically sealed within glass and steel, every accommodation comes with its own spacious balcony for lounging and gazing at the sun setting over the sea or the city lighting up at dusk.
—Condé Nast, Condé Nast Traveler, 26 Jan. 2026
Airline ticket prices were all-inclusive: a ride to Idlewild Airport (renamed JFK in 1963), food and drink, a pillow, a blanket (both hermetically sealed in plastic), and any and all baggage fees.
—Oc Register, 25 Jan. 2026
Yet unlike North Korea, Iran cannot hermetically seal itself off: Israel dominates its skies and has repeatedly demonstrated its ability to strike nuclear sites, missile bases, and senior commanders.
—Karim Sadjadpour, Foreign Affairs, 14 Oct. 2025
People kept busy by cheering the occasional seagull that landed next to the chimney or by clapping, perhaps in the hope that those hermetically sealed inside the Sistine Chapel might hear their encouragement.
—Katie Primm, NBC news, 9 May 2025
See All Example Sentences for hermetically
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Condé Nast, Condé Nast Traveler, 26 Jan. 2026
Airline ticket prices were all-inclusive: a ride to Idlewild Airport (renamed JFK in 1963), food and drink, a pillow, a blanket (both hermetically sealed in plastic), and any and all baggage fees.
—Oc Register, 25 Jan. 2026
Yet unlike North Korea, Iran cannot hermetically seal itself off: Israel dominates its skies and has repeatedly demonstrated its ability to strike nuclear sites, missile bases, and senior commanders.
—Karim Sadjadpour, Foreign Affairs, 14 Oct. 2025
People kept busy by cheering the occasional seagull that landed next to the chimney or by clapping, perhaps in the hope that those hermetically sealed inside the Sistine Chapel might hear their encouragement.
—Katie Primm, NBC news, 9 May 2025
See All Example Sentences for hermetically
Cite this Entry
“Hermetically.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hermetically. Accessed 2 Feb. 2026.
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