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American Dictionary of the English Language

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Insoluble


INSOL'UBLE, adjective [Latin insolubilis; in and solvo, to dissolve.]

1. That cannot be dissolved, particularly by a liquid. We say a substance is insoluble in water, when its parts will not separate and mix with that fluid.

2. Not to be solved or explained; not to be resolved; as a doubt or difficulty. [Not much used.]