Meaning of MR, MRS, RSVP, SMS, SIM, and other acronyms you may not known What Do Acronyms Like “MR,” “MRS,” “RVSP,” “AM,” and “PM” Mean in the News Hub? Jul 16, 2022, 3:34 PM. The purpose of an acronym is to make a lengthier term or expression more memorable by shortening it. Many people can … Continue reading Meaning of MR, MRS, RSVP, SMS, SIM, and other acronyms you may not known