Meaning & use
meridiem
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A Latin word for "midday," used in English chiefly in the terms "ante meridiem" (before noon) and "post meridiem" (after noon).
See it in a sentence
The abbreviation "p.m." stands for post meridiem, meaning literally "after midday."
Court documents listed the hearing time as 10:45 ante meridiem.
A note on using this word
"Meridiem" rarely stands alone in modern English; it survives almost exclusively inside the familiar abbreviations AM and PM.
Words with a similar meaning
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