Correct spelling, explanation: solution is an English noun that comes from the verb to solve. The root of this word looked really similar as it is a Latin word solver, whose meaning was to loosen. The word, however, evolved and today it has a few different meanings. The only correct spelling of the noun is with a single -l.

Definition of solution:
1. noun – which can mean an answer, a fixing of a problem, or a liquid mixture of two or more substances, in which a solid substance is thinned in the other one.
Can you help me find the solution to the second question in this quiz?
I wish I could find an easy solution to your problems at work.
Do not touch this solution as it can irritate your skin.

Expressions with solution:
Some commonly used collocations with the word solution include a final solution, a creative solution, and an innovative solution. We can also have a solution to something or a solution for something. When it comes to chemistry, some popular expressions are saline solution, alcohol solution, and acid solution.

Incorrect spelling, explanation: a popular mistake among both native users and learners of English is to double the letter -l in the word solution. The form sollution, however, is wrong so pay attention not to make this mistake next time you write the word.