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HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
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WORDNET DICTIONARY

Noun penetrability has 1 sense

• penetrability(n = noun.attribute) perviousness - the quality of being penetrable (by people or light or missiles etc.); Array
is a kind of quality
Antonym: impenetrability
Derived forms adjective penetrable₁, adjective penetrable₂

CIDE DICTIONARY

ROGET THESAURUS

penetrability

Softness

N softness, pliableness, flexibility, pliancy, pliability, sequacity, malleability, ductility, tractility, extendibility, extensibility, plasticity, inelasticity, flaccidity, laxity, penetrability, clay, wax, butter, dough, pudding, alumina, argil, cushion, pillow, feather bed, down, padding, wadding, foam, mollification, softening, soft, tender, supple, pliant, pliable, flexible, flexile, lithe, lithesome, lissom, limber, plastic, ductile, tractile, tractable, malleable, extensile, sequacious, inelastic, aluminous, remollient, yielding, flabby, limp, flimsy, doughy, spongy, penetrable, foamy, cushiony, flaccid, flocculent, downy, edematous, oedematous, medullary, argillaceous, mellow, soft as butter, soft as down, soft as silk, yielding as wax, tender as chicken.

For further exploring for "penetrability" in Webster Dictionary Online