1. Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch. “Impalpable powder.”
2. Not material; intangible; incorporeal. “Impalpable, void, and bodiless.”
3. Not apprehensible, or readily apprehensible, by the mind; unreal; as, impalpable distinctions.
adj 1: incapable of being perceived by the senses especially the
sense of touch; "the intangible constituent of
energy"- James Jeans [syn: intangible] [ant: tangible]
2: imperceptible to the senses or the mind; "an impalpable
cloud"; "impalpable shadows"; "impalpable distinctions";
"as impalpable as a dream" [ant: palpable]
3: not perceptible to the touch; "an impalpable pulse"