hermetically

3 definitions • 5 examples

in a way that does not allow any air or other substance to leave or enter:

They were quarantined for three weeks under hermetically sealed conditions.

Companies resorted to hermetically sealed packaging.

in a way that involves little communication with people living outside a group or place:

He has been on his Michigan farm for 25 years, living simply and hermetically.

Thoreau scribbled hermetically in the Massachusetts woods.

tightly closed so that air cannot enter or escape:

The space vehicle must be hermetically sealed.