pm

noun ! Definition from WordNet 3.1, Princeton University. More about pm at Wordnik → Where our words come from →

1. An examination and dissection of a dead body to determine cause of death or the changes produced by disease.
2. A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium.
3. The person who holds the position of head of the government in the United Kingdom.