Im*pal"pa*ble (?), a. [Pref. im- not + palpable: cf. F. impalpable.]
Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch.
Not material; intangible; incorporeal.
, void, and bodiless."
Not apprehensible, or readily apprehensible, by the mind; unreal; as, impalpable distinctions.
© Webster 1913.