Multiple choice general knowledge AM Ante Meridiam Ante Meridiem After Meridiam After Meridiem Reveal answer Fill a bubble to check yourself B Correct answer Explanation AM stands for 'Ante Meridiem', a Latin phrase meaning 'before midday' or 'before noon'. It's used to designate times from midnight until noon. The correct spelling is 'Meridiem', not 'Meridiam'. PM stands for 'Post Meridiem' (after midday).