1. (

• 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 ;

2. (

• promethium ,
• Pm ,
• atomic_number_ ,

) 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

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

4. (

• phase_modulation ,
• PM

) modulation of the phase of the carrier wave ;