Noun
(chemistry) An idealized solution whose components exactly follow Raoult's law; equivalently, one where the enthalpy of mixing equals zero.
Synonym: ideal mixture
Used other than figuratively or idiomatically: see ideal, solution.
Source: en.wiktionary.orgThe German government has taken energetic measures against the propagation of the defective, the mentally diseased, and the criminal. The ideal solution would be the suppression of each of these individuals as soon as he has proven himself to be dangerous. Alexis Carrel
The absence of a decision could result in an impetuous, dangerous development of a situation which has got out of any control. There is no ideal solution in such circumstances. The only thing is to find the optimal solution, "a lesser evil." Wojciech Jaruzelski