hermetically sealed

hermetically sealed is the simple past and past participle of hermetically seal.

Meaning of hermetically seal

hermetically seal (third-person singular simple present hermetically seals, present participle hermetically sealing, simple past and past participle hermetically sealed)

(transitive) To seal with an airtight seal.
- They hermetically sealed the kettles to accelerate the cooking.
(transitive) To isolate from external influences or prevent escape from.
- We were hermetically sealing ourselves within the seemingly safe cocoon of groupthink.

hermetically sealed

Sealed with an airtight hermetic seal.
- Now, I still think that for this box of matches to have escaped the wear of time for immemorial years was a strange, and for me, a most fortunate thing. Yet oddly enough I found here a far more unlikely substance, and that was camphor. I found it in a sealed jar, that, by chance, I supposed had...1895, H. G. Wells, chapter X, in The Time Machine
Synonyms:

staunch

See hermetic

What does hermetically sealed mean?: Hermetically sealed means sealed with an airtight hermetic seal.
What is hermetically sealed the simple past and past participle of?: Hermetically sealed is the simple past and past participle of hermetically seal.
What part of speech is hermetically sealed?: Hermetically sealed is an adjective.

Adapted from Wiktionary: hermetically sealed (page history and authors); hermetically seal (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “hermetically sealed.” Word.ws, https://word.ws/hermetically_sealed. Based on Wiktionary, CC BY-SA 4.0.