| a. | 1. | Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch. |
| 2. | Not material; intangible; incorporeal. | |
| 3. | Not apprehensible, or readily apprehensible, by the mind; unreal; |
| Adj. | 1. | impalpable - incapable of being perceived by the senses especially the sense of touch; "the intangible constituent of energy"- James Jeans Synonyms: intangible |
| 2. | impalpable - imperceptible to the senses or the mind; "an impalpable cloud"; "impalpable shadows"; "impalpable distinctions"; "as impalpable as a dream" | |
| 3. | impalpable - not perceptible to the touch; "an impalpable pulse" |