Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “hermetic”


adjective     /hɜːˈmet.ɪk/ US  /hɚˈmet̬-/
specialized engineering (of a container ) so tightly closed that no air can leave or enter : a hermetic seal Open and closed formal If a particular group is hermetic, the people who live within it don't often communicate with those who live outside it: He entered the hermetic world of the monastery at a young age .Lifestyles and their study
(Definition of hermetic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of hermetic

Translations of “hermetic”

Word of the Day

as husband and wife

in the same way as two people who are married

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More