Definition
Something hermetic is completely sealed, especially against the escape or entry of air or fluids. Think of a can of food π₯« that's been processed to last for years without spoiling. It's like having an invisible force field against the outside world. Hermetic seals are essential for preserving freshness and preventing contamination. Unlike something 'leaky,' a hermetic container keeps things in pristine condition. Itβs the ultimate in sealing!