Etymology: L post meridiem
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1. Past Master.
2. Paymaster.
3. See p.m.
4. Police Magistrate.
5. Postmaster.
6. post-mortem.
7. Prime Minister.
8. Provost Marshal.
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Main entry: pm
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p.m.,
2. post-mortem.
Pm (no period),
promethium (chemical element).
P.M.,
2. Paymaster.
3. Police Magistrate.
4. Postmaster.
5. Prime Minister.
p.m. (no periods),
promissory note.
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abbr. after noon, used after times of day between noon and midnight
at 3:30 p.m
Origin:
from Latin post meridiem
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in the afternoon or evening
— used with numbers to show the time of day
She went to bed at 10 p.m.
He works every day from 8:00 a.m. to/until 4:30 p.m.
Lunch will be served at 12 p.m. [=noon; one hour after 11 a.m.]
◇ The abbreviation p.m. stands for the Latin phrase post meridiem, which means “after noon.” compare ↑a.m.
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•
The appointment is at 3 p.m.
Word Origin:
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p.m.abbrev. of post meridiem, afternoon, q.v.
Useful english dictionary. 2012.