the.com/impermeability
The art of letting nothing through, from rain to bad ideas.
means The quality of a material or surface that refuses to let liquids, gases, or anything else pass through it.
from From Latin per (through) plus meare (to pass), negated by im- — literally not-through-passable, a triple-locked door of a word.
Cell biologyCell membranes choose their impermeability selectively.
GeologyImpermeable clay traps oil and groundwater underground.
Figurative useDescribes minds sealed against persuasion.