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1791, in chemistry, from Latin deliquescentem (nominative deliquescens), present participle of deliquescere (see deliquesce). General use dates from 1866. Related: Deliquescence.
deliquescence del·i·ques·cence (děl'ĭ-kwěs'əns)n. The process of dissolving or of becoming liquid through the absorption of moisture from the atmosphere.