hermétique

Borrowed from Medieval Latin hermeticus, irregular derivation of Hermes Trismegistus, the god and mythological alchemist, said to possess a magic ability to seal treasure chests so that nothing could access their contents.

• IPA^(key): /ɛʁ.me.tik/

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hermétique (plural hermétiques)

1. hermetic (airtight, watertight, etc.)

• hermétiquement

• imperméable

• “hermétique”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.