meridiem

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meridiem

Where it comes from

Back-formation from the phrases ante meridiem and post meridiem (more commonly a.m. and p.m.), from Latin merīdiem, accusative of merīdiēs (“midday, noon”).

noun meridiems

rare, uncountable Midday, noon. Quantities and frequencies are distributed as follows (neglecting the meridiem hour):[…]
countable The property of a timestamp of being either a.m. or p.m. The terminal responds N HH MM CR where N, HH, and MM are the meridiem, hour, and minutes, as above.

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MLA

"meridiem." Wiktionary, via Micwyn, micwyn.com/word/meridiem. Accessed 6 Nov. 2026.

APA

meridiem. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/meridiem

Chicago

"meridiem." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/meridiem.

BibTeX

@misc{meridiem_2026,
  title = {meridiem},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/meridiem},
  urldate = {2026-11-06}
}