The noun solution has 5 senses (first 4 from tagged texts)
1. (131) solution -- (a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution; "he used a solution of peroxide and water")
2. (8) solution, answer, result, resolution, solvent -- (a statement that solves a problem or explains how to solve the problem; "they were trying to find a peaceful solution"; "the answers were in the back of the book"; "he computed the result to four decimal places")
3. (8) solution -- (a method for solving a problem; "the easy solution is to look it up in the handbook")
4. (6) solution, root -- (the set of values that give a true statement when substituted into an equation)
5. solution -- (the successful action of solving a problem; "the solution took three hours")