an examination and dissection of a dead body to determine cause of death or the changes produced by disease

[ Syn: autopsy , necropsy , postmortem , post-mortem , pm , postmortem examination , post-mortem examination ]

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

[ Syn: promethium , pm , atomic number 61 ]

the person who holds the position of head of the government in the United Kingdom

[ Syn: prime minister , pm , premier ]

modulation of the phase of the carrier wave

[ Syn: phase modulation , pm ]