Impermeable

Not easily penetrated. The property of a material or soil that does not allow, or allows only with great difficulty, the movement or passage of water.

impermeable

preventing the passage of fluid. A formation may be porous yet impermeable if there is an absence of connecting passages between the voids within it. See permeability.

impermeable

(Green plants as organisms) not allowing water to pass through

impermeable

that cannot be permeated 
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Impermeable

Not easily penetrated. The property of a material or soil that does not allow, or allows only with great difficulty, the movement or passage of water.
Found on https://www.encyclo.co.uk/local/20094

impermeable

[adj] - preventing especially liquids to pass or diffuse through
Found on http://www.webdictionary.co.uk/definition.php?query=impermeable

Impermeable

Im·per'me·a·ble adjective [ Prefix im- not + permeable : confer French imperméable , Latin impermeabilis .] Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air....
Found on http://www.encyclo.co.uk/webster/I/19

impermeable

Not permeable; not permitting the passage of substances (e.g., liquids, gases) or heat through a membrane or other structure. ... Synonym: impervious. ... Origin: L. Im-permeabilis, not to be passed through ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

impermeable

adjective preventing especially liquids to pass or diffuse through; `impermeable stone`; `an impermeable layer of scum`; `a coat impermeable to rain`
Found on https://www.encyclo.co.uk/local/20974

impermeable

(im-pur´me-ә-bәl) not permitting passage, as for fluid.
Found on http://www.encyclo.co.uk/local/21001

Impermeable

• (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.
Found on http://thinkexist.com/dictionary/meaning/impermeable/

Impermeable

The ability of a material or product to reduce or eliminate gaseous transmissions through it's mass; measured as the rate of Water Vapor Transmission (WVT). Note: Not all materials that are waterproof are vaporproof; all materials that are vaporproof are inherently waterproof.
Found on http://www.moxie-intl.com/glossary.htm

impermeable

Type: Term Pronunciation: im-per′mē-ă-bĕl Definitions: 1. Not permeable; not permitting the passage of substances (liquids, gases) or heat through a membrane or other structure. Synonyms: impervious
Found on http://www.medilexicon.com/medicaldictionary.php?t=43798

Impermeable

Not permitting the passage of a fluid.
Found on https://teeic.indianaffairs.gov/glossary/glossary.htm

impermeable

preventing especially liquids to pass or diffuse through
Found on https://www.vocabulary.com

impermeable

preventing especially liquids to pass or diffuse through
Found on https://www.vocabulary.com/lists/388677

Impermeable

Rocks that do not allow water to pass through them are called 'impermeable'.
Found on http://www.bgs.ac.uk/discoveringGeology/glossary.html
No exact match found