Etymology
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deliquescent (adj.)

1791, in chemistry, "liquefying in air," from Latin deliquescentem (nominative deliquescens), present participle of deliquescere "to melt away," from de- (see de-) + liquescere "to melt," from liquere "to be liquid" (see liquid (adj.)). Transferred or figurative sense of "apt to dissolve or melt away" is by 1837. Related: Deliquescence.

updated on July 15, 2018

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Definitions of deliquescent from WordNet

deliquescent (adj.)
(especially of certain salts) becoming liquid by absorbing moisture from the air;
From wordnet.princeton.edu, not affiliated with etymonline.