definition of
Pm

[1] #1 Pm n. [autopsy, necropsy, postmortem, post-mortem, PM, postmortem examination, post-mortem examination] an examination and dissection of a dead body to determine cause of death or the changes produced by disease. wn

[2] #2 Pm n. [promethium, atomic number 61] 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. wn

[3] #3 Pm n. [Prime Minister, PM, premier] the person who holds the position of head of the government in the United Kingdom. wn

[4] #4 Pm n. [phase modulation, PM] modulation of the phase of the carrier wave. wn