Definitions

1. adjective

relating to or resembling a hermet, especially a seal or closure that is airtight or gas-tight.

“The hermetical seal on the container ensured that the contents remained fresh.”

2. adjective

isolated or separate from the outside world; confined within itself.

“The hermetical community on the island had its own unique culture and customs.”

3. noun

a quality of being isolated or separate from the outside world.

“The hermetical atmosphere of the room made it feel like a different world.”