The Collaborative International Dictionary
Imponderability
Imponderability \Im*pon`der*a*bil"i*ty\, n. [Cf. F. impond['e]rabilit['e].] The quality or state of being imponderable; imponderableness.
Wiktionary
imponderability
n. The state or characteristic of being imponderable.
Usage examples of "imponderability".
A sensation (the word you see is material and inappropriate) of etherealization and imponderability pervaded me, and I was not sorry to get rid of such a dull, slow mass as I now perceived myself to be, lying there on the bed.