post mortem

Short definition from Wiktionary

Adjective

1. 1
   After death.
2. 2
   Having been inflicted or having occurred after death.
3. 3
   Alternative spelling of post mortem.

Adverb

1. 1
   Occurring after death.

Noun

1. 1
   An investigation of a corpse to determine the cause of death.
2. 2
   Any investigation after the conclusion of an activity, particularly when said activity produces an unwanted outcome.
3. 3
   At Cambridge, a second examination for those who were "plucked" or failed in the first.
4. 4
   Alternative spelling of post mortem.