Multiple choice A.M. stands for Anti Meridiem Ante Meridiem Ant Meridium Ante Meridian Reveal answer Fill a bubble to check yourself B Correct answer Explanation A.M. stands for Ante Meridiem, Latin for 'before noon' used to denote morning hours from midnight to noon. P.M. (Post Meridiem) denotes afternoon and evening hours. The correct spelling is Ante Meridiem, not Anti Meridiem or Ante Meridian.