Breadcrumb Home Cite Am and pm The Question: What do the abbreviations am or pm (as in time) stand for? The Answer: AM is Latin for ante meridiem (before noon). PM is Latin for post meridiem (after noon). -The Editors Top Ten Frequently Asked QuestionsOther Archives:Feature ArchivePoll ArchiveQuiz ArchiveTimeline ArchiveTop Ten Archive See also: What is G.M.T.?