1. the act of solving a problem, question, etc.: The situation is approaching solution.
2. the state of being solved: a problem capable of solution.
3. a particular instance or method of solving; an explanation or answer: The solution is as good as any other.
4. Mathematics .
a. the process of determining the answer to a problem.
b. the answer itself.
5. Chemistry .
a. the process by which a gas, liquid, or solid is dispersed homogeneously in a gas, liquid, or solid without chemical change.
b. such a substance, as dissolved sugar or salt in solution.
c. a homogeneous, molecular mixture of two or more substances.