To melt or dissolve by absorbing moisture from the air; an older or variant spelling of 'deliquesce.'
From Latin 'deliquare' (de- 'completely' + liquare 'to melt, liquefy'), related to 'liquefy' and 'liquid.' This is an archaic form of the more common 'deliquesce.'
Some salts and chemicals will literally milt into liquid if you leave them out on a humid day—chemists call this 'deliquating,' and it's why you have to keep salt in a salt shaker with a tight lid!
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