ante meridiem

== English == === Alternative forms === am, AM a.m. antemeridiem === Etymology === Unadapted borrowing from Medieval Latin ante merīdiem, from Latin ante (“before”) + merīdiem, accusative singular of merīdiēs (“noon, midday”). === Adverb === ante meridiem (not comparable) Before noon, in the morning. ==== Antonyms ==== post meridiem