\In*dis"so*lu*ble\, a. [L. indissolubilis: cf. F.
indissoluble. See {In-} not, and {Dissoluble}, and cf.
{Indissolvable}.]
1. Not dissoluble; not capable of being dissolved, melted, or
   liquefied; insoluble; as few substances are indissoluble
   by heat, but many are indissoluble in water. --Boyle.

2. Incapable of being rightfully broken or dissolved;
   perpetually binding or obligatory; firm; stable, as, an
   indissoluble league or covenant.

         To the which my duties Are with a most indissoluble
         tie Forever knit.                     --Shak.