indissoluble

Meanings

1. 1
   adj

   impossible to break, separate, annul, or bring to an end

   The treaty described the federation as an indissoluble union of equal states.

2. 2
   adj

   incapable of being dissolved in a liquid

   Under those laboratory conditions, the compound remained indissoluble in water.

From Middle French indissoluble, from Latin indissolubilis, formed from in-, 'not,' and dissolubilis, 'capable of being dissolved.' The literal chemical sense broadened naturally to bonds, agreements, and unions that cannot be broken apart.

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