The Collaborative International Dictionary of English v.0.48:
Palpability \Pal`pa*bil"i*ty\, n. The quality of being palpable, or perceptible by the touch. --Arbuthnot. [1913 Webster]WordNet (r) 3.0 (2006):
palpability n 1: the quality of being perceivable by touch [syn: tangibility, tangibleness, palpability] [ant: impalpability, intangibility, intangibleness]