FUGACITY

fugacity. Fugacity, n. the act of flying away, unsteadiness

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Fu‐gac″i‐ty (?), a. [[L fugacitas: cf. F. fugacité.]] 1. 1. The quality of being fugacious; fugaclousness; volatility; as, fugacity of spirits. Boyle.
2. 2. Uncertainty; instability. Johnson.