Citations:solution

A homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.
 * 2011, Chris Peterson, Building with Secondhand Stuff, page 141:
 * Remove tarnish with a copper polish or use the proven home method of boiling the hardware in a solution of water with a teaspoon of salt and cup of vinegar.

An act, plan or other means, used or proposed, to solve a problem.

The answer to a problem.

(marketing buzzword) A product, service or suite thereof.
 * 2002, Management for Strategic Business Ideas, volume 76, page 45:
 * The Acier Plus network has existed since 1995 and, according to president and general manager Pierre Arcand, it was an opportunity to offer a business solution and unique added value to Acier's Canam clients.

(law, UK, archaic, rare) Satisfaction of a claim or debt.
 * 1708, Watson against Forrester, in William Maxwell Morison, The Decisions of the Court of Session: From its First Institution Until the Separation of the Court into Two Divisions in the Year 1808 (1811), volume 15, page 755:
 * There was neither foundation in law nor reason in this process, for the backbond being in the granter's hand, it was chyrographum apud debhorem repertum, which presumes liberation, satisfaction and solution; and as to the notes written on the back of it, only for his own memory, it were strange and extraordinary case to make that probative, when it might be the state of their affairs at that time in 1697, whereas he lived four or five years after, viz. till 1701, during which time Watson and he have cleared all their accounts, otherwise there was more than sufficient time for Watson* to have got his backbond renewed, which he never did during all that space.
 * There was neither foundation in law nor reason in this process, for the backbond being in the granter's hand, it was chyrographum apud debhorem repertum, which presumes liberation, satisfaction and solution; and as to the notes written on the back of it, only for his own memory, it were strange and extraordinary case to make that probative, when it might be the state of their affairs at that time in 1697, whereas he lived four or five years after, viz. till 1701, during which time Watson and he have cleared all their accounts, otherwise there was more than sufficient time for Watson* to have got his backbond renewed, which he never did during all that space.