usage: an examination and dissection of a dead body to determine cause of death or the changes produced by disease
2. promethium, Pm, atomic number 61, metallic element, metal
usage: 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. Prime Minister, PM, premier, head of state, chief of state
usage: the person who holds the position of head of the government in the United Kingdom
4. phase modulation, PM, modulation
usage: modulation of the phase of the carrier wave
Adjective
1. post meridiem, p.m., postmeridian (vs. antemeridian)
usage: after noon
Adverb
1. post meridiem, P.M.
usage: between noon and midnight; "let's meet at 8 P.M."