Fugacity
Pronunciation : Fu*gac"i*ty
Part of Speech : a.
Etymology : [L fugacitas: cf. F. fugacit?.]
Definition : 1. The quality of being fugacious; fugaclousness; volatility; as, fugacity of spirits. Boyle.
2. Uncertainty; instability. Johnson.
Source : Webster's Unabridged Dictionary, 1913