The title Ms. was made up, not as a shortening of another word, but as a way to avoid commenting on the marital status of a woman. Traditionally, Miss was the proper term for an unmarried woman, and Mrs. was for a married woman. Ms.
What does MS stand mean?
Definition. MS. Microsoft. MS. Master of Science (degree)
Should I use Miss or Ms?
Miss: Use “Miss” when addressing young girls and women under 30 that are unmarried. Ms.: Use “Ms.” when you are not sure of a woman's marital status, if the woman is unmarried and over 30 or if she prefers being addressed with a marital-status neutral title. Mrs.: Use “Mrs.” when addressing a married woman.