The story
Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Impossible to permeate. Full definition →
Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).
Etymology from Wiktionary, CC BY-SA 4.0.