What Is Salting?

When you type in your password into a sight, what they do is they take that password and they hash it. They run it through a one way only in cription. So if it's an unsalted password, i can take any word list, run it against the hashing aarithm and get the exact same output as your password would be stored in. But if it's been salted, i have to go another step. I have to incrip my word list with the salt. Some excens i think.