Memorize, as lines, is a term used to describe the process of committing something to memory. It involves repeating the information multiple times until it is firmly stored in one's mind. This can be done by repeating the information out loud or writing it down. Memorizing lines is often used in the performing arts, such as theater and music, where performers must remember their lines for a performance. It is also used in education, where students must memorize facts and figures for tests.