IMPALPABLE

impalpable. Impalpable, a. not perceptible to the touch

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Im‐pal″pa‐ble (?), a. [[Pref. im- not + palpable: cf. F. impalpable.]] 1. 1. Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch. “Impalpable powder.” Boyle.
2. 2. Not material; intangible; incorporeal. “Impalpable, void, and bodiless.” Holland.
3. 3. Not apprehensible, or readily apprehensible, by the mind; unreal; as, impalpable distinctions.