1. (a.) Imperceptible to the touch; intangible; extremely fine, so that no grit can be perceived by touch; as, impalpable distinctions.
2. (a.) Not material; incorporeal.
3. (a.) Not apprehensible, or readily apprehensible, by the mind; unreal.
Thesaurus Entries
airy, asomatous, astral, atomic, bodiless, branny, chalklike, chalky, comminute, comminuted, corpuscular, crushed, decarnate, decarnated, detrital, detrited, discarnate, disembodied, disintegrated, dusty, efflorescent, embryonic, ethereal, evanescent, extramundane, farinaceous, fine, flaky, floury, furfuraceous, germinal, ghostly, gone to dust, granular, grated, ground, immaterial, imperceptible, imponderable, inappreciable, incorporate, incorporeal, indiscernible, infinitesimal, insensible, insubstantial, intangible, invisible, levigated, mealy, microcosmic, microscopic, milled, molecular, nonmaterial, nonphysical, nonsubstantial, occult, otherworldly, pestled, phantom, powdered, powdery, psychic, pulverant, pulverized, pulverulent, reduced to powder, scaly, scobicular, scobiform, scurfy, shadowy, sharded, shredded, spiritual, subatomic, supernatural, tenuous, thin, transmundane, triturated, ultramicroscopic, unapparent, unappreciable, unconcrete, unearthly, unembodied, unextended, unfleshly, unobservable, unperceivable, unphysical, unseeable, unsolid, unsubstanced, unsubstantial, unworldly, weightless
