The meaning of IMPERMEABLE is not permitting passage (as of a fluid) through its substance; broadly : impervious. How to use impermeable in a sentence.

The male warrior is supposed to have a completely impermeable, sealed-up body that can not be penetrated by anything.

Impossible to permeate: an impermeable membrane; an impermeable border. im·per′me·a·bil′i·ty, im·per′me·a·ble·ness n.

However, the water pores are completely impermeable to charged species, such as protons, a property critical for the conservation of the membrane's electrochemical potential difference.

Definition of impermeable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Factsheet What does the adjective impermeable mean? There are three meanings listed in OED's entry for the adjective impermeable. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Geology, Chemistry (of porous substances, etc.) not permitting a fluid to pass through: The tree cells have an impermeable membrane. im•per•me•a•bil•i•ty /ɪmˌpɜrmiəˈbɪlɪti/ n. [uncountable]

• The layer of clay acts as an impermeable barrier against some chemicals. • Otherwise it will yield little or no water from the impermeable confining layer.

Relating to a material through which substances, such as liquids or gases, cannot pass. Some substances, such as some types of contact lenses, are permeable to gas but impermeable to liquid.

Resistant or impervious to the passage or penetration of substances or elements, such as liquids, gases, or even light. See example sentences, synonyms, and etymology for the adjective impermeable.