Definition of "Solution" :

noun: the successful action of solving a problem

"The solution took three hours."

noun: a method for solving a problem

"The easy solution is to look it up in the handbook."

noun: a statement that solves a problem or explains how to solve the problem

"They were trying to find a peaceful solution."

noun: the set of values that give a true statement when substituted into an equation

noun: a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution

"He used a solution of peroxide and water."