post meridiem

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Related to post meridiem: ante meridiem

post me·rid·i·em

adv. & adj. Abbr. PM also pm or pm
After noon. Used chiefly in the abbreviated form to specify the hour: 10:30 pm; a pm appointment. See Usage Note at PM.

[Latin post merīdiem : post, after + merīdiem, accusative of merīdiēs, midday.]

post meridiem

(ˈpəʊst məˈrɪdɪəm)
the full form of p.m.
[C17: Latin: after noon]


Chem. Symbol.


1. Past Master.
2. Paymaster.
3. Police Magistrate.
4. Postmaster.
5. post-mortem.
6. Prime Minister.
7. Provost Marshal.


or P.M.,

1. after noon.
2. the period between noon and midnight.
[< Latin post merīdiem]
usage: See a.m.

post meridiem

- The expansion of p.m., from Latin, meaning "after noon" (1647).
See also related terms for noon.
ThesaurusAntonymsRelated WordsSynonymsLegend: meridiem - after noon
postmeridian - after noon meridiem - between noon and midnight; "let's meet at 8 P.M."
Latin - any dialect of the language of ancient Rome
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References in periodicals archive ?
Ante meridiem is before midday; post meridiem is after midday, and midday itself cannot logically be classified as either after or before itself.
Obviously 12 hours post meridiem (midday) must be midnight.
The Post Meridiem, CNAC production is completing post.