deliquescencyrare.|dɛlɪˈkwɛsənsɪ| [f. as prec. + -ency.] The quality of being deliquescent; tendency to deliquesce. 1756C. Lucas Ess. Waters II. 42 Some attribute this deliquescency of salt to the redundance of an alcali.1860Ruskin Mod. Paint. V. vi. vii. §3. 53.