pm Meaning, Definition & Usage

1. noun an examination and dissection of a dead body to determine cause of death or the changes produced by disease
   postmortem examination; post-mortem; necropsy; post-mortem examination; postmortem; autopsy.
   
2. noun 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
   promethium; atomic number 61.
   
3. noun the person who holds the position of head of the government in the United Kingdom
   Prime Minister; premier.
   
4. noun modulation of the phase of the carrier wave
   phase modulation.
   

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