adjective Etymology: Late Latin impermeabilis, from Latin in- + Late Latin permeabilis permeable Date: 1697 not permitting passage (as of a fluid) through its substance, impermeability noun
IMPERMEABLE
Meaning of IMPERMEABLE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012