hermetic
/her-MET-ik/adjectiveairtight; insulated from outside influence
“The lab keeps a hermetic seal on its prototypes.”
- Synonyms
- airtight, sealed, insular
- Antonyms
- open, permeable
- Memory hook
- Hermes' seal: closed by the god of secrets.
Learn hermetic and 1,000+ GRE words with spaced repetition and an AI tutor.
Start learning free