To loosen; disentangle; unravel; hence, to explain or clear up the difficulties in; resolve; explain; make clear; remove perplexity from: as, to solve a difficulty, a puzzle, or a problem.To determine; put an end to; settle.To determine or work out by rule; operate on by calculation or mathematical processes, so as to bring out the required result: as, to solve a problem in mathematics.To dissolve; melt.n. Solution.