post mortem UK /ˌpəʊs(t)ˈmɔːtəm/US /ˌpoʊs(t)ˈmɔɹtəm/noun 3adjective 2adverb 1forms 2 noun3 •An investigation of a corpse to determine the cause of death. •(figurative) Any investigation after the conclusion of an activity, particularly when said activity produces an unwanted outcome.Each user-visible outage or SLA violation should be followed by a postmortem and conclude with implementation of the recommendations in the postmortem report. — 2014 •(UK, no longer used) At Cambridge, a second examination for those who were "plucked" or failed in the first. adjective2 •After death.The hospice's standard procedure for post mortem room cleaning looks very thorough. •Having been inflicted or having occurred after death.We shouldn't let these post mortem injuries distract us while looking for the cause of death.The post mortem timeline is incomplete. adverb1 •Occurring after death.The injuries were found to have been caused post mortem. formspost mortems · post-mortems