impermeable

• POS: Adjective
• HYPHEN: im=per=me=a=ble

CIDE DICTIONARY

impermeable, a. [Pref. im- not + permeable: cf. F. imperméable, L. 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.  [1913 Webster]

OXFORD DICTIONARY

impermeable, adj.
1 that cannot be penetrated.
2 Physics that does not permit the passage of fluids.

Derivative

impermeability n.

Etymology

F imperm{eacute}able or LL impermeabilis (as IN-(1), PERMEABLE)

THESAURUS

impermeable

close, close-knit, close-textured, close-woven, closed, compact, compacted, compressed, concentrated, concrete, condensed, congested, consolidated, crammed, crammed full, crowded, dense, firm, gluey, hard, heavy, hermetic, holeproof, impassable, impenetrable, impervious, jam-packed, jammed, massive, nonporous, nonpuncturable, packed, punctureproof, sealed, serried, solid, substantial, thick, thick-growing, thickset, unpassable, unperforable, unpierceable, viscid, viscose, viscous

ROGET THESAURUS

impermeable

Closure

N closure, occlusion, blockade, shutting up, obstruction, embolus, contraction, infarction, constipation, obstipation, blind alley, blind corner, keddah, cul-de-sac, caecum, imperforation, imperviousness, impermeability, stopper, closed, shut, operculated, unopened, unpierced, imporous, caecal, closable, imperforate, impervious, impermeable, impenetrable, impassable, unpassable, invious, pathless, wayless, untrodden, untrod, unventilated, air tight, water tight, hermetically sealed, tight, snug.

Density

N density, solidity, solidness, impenetrability, impermeability, incompressibility, imporosity, cohesion, constipation, consistence, spissitude, specific gravity, hydrometer, areometer, condensation, caseation, solidation, solidification, consolidation, concretion, coagulation, petrification, crystallization, precipitation, deposit, precipitate, inspissation, gelation, thickening, indivisibility, indiscerptibility, insolubility, indissolvableness, solid body, mass, block, knot, lump, concretion, concrete, conglomerate, cake, clot, stone, curd, coagulum, bone, gristle, cartilage, casein, crassamentum, legumin, superdense matter, condensed states of matter, dwarf star, neutron star, dense, solid, solidified, caseous, pukka, coherent, cohesive, compact, close, serried, thickset, substantial, massive, lumpish, impenetrable, impermeable, nonporous, imporous, incompressible, constipated, concrete, knotted, knotty, gnarled, crystalline, crystallizable, thick, grumous, stuffy, undissolved, unmelted, unliquefied, unthawed, indivisible, indiscerptible, infrangible, indissolvable, indissoluble, insoluble, infusible.