p.m. Definition

p.m.
pm
P.M.
PM
abbreviation

1. Post meridiem.
2. Post mortem.

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post meridiem
noun

1. After midday; in the afternoon.

Etymology: 17c: Latin.

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postmortem
noun

1. The dissection and examination of the internal organs of the body after death, in order to determine the cause of death. Also called autopsy.

Form: postmortem examination (in full)
2. colloq
An after-the-event discussion.

adj

1. Coming or happening after death.

Etymology: 18c as the phrase post mortem: Latin, meaning ‘after death'.