an·te me·rid·i·em (ăn′tē mə-rĭdē-əm)
adv. & adj. Abbr. AM or am or AM
Before noon. Used chiefly in the abbreviated form to specify the hour: 10:30 AM. See Usage Note at AM.
[Latin ante, before + merīdiem, accusative of merīdiēs, noon.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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