Bible Dictionaries
Impermeable

Webster's Dictionary

(a.) Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air.

Bibliography Information
Webster, Noah. Entry for 'Impermeable'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​i/impermeable.html. 1828.