ETYM Greek; auto self + opsis sight: cf. French autopsie. Related to Optic.
An examination and dissection of a dead body to determine cause of death or the changes produced by disease; SYN. necropsy, postmortem, pm, postmortem examination.
Personal examination, especially post-mortem.
Or postmortem; Examination of the internal organs and tissues of a dead body, performed to try to establish the cause of death.

To perform an autopsy; do a post-mortem.