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1. 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

1. After noon
   - post meridiem

1. The person who holds the position of head of the government in the United Kingdom
   - Prime Minister, premier
    
2. An examination and dissection of a dead body to determine cause of death or the changes produced by disease
   - autopsy, necropsy, postmortem, post-mortem, postmortem examination, post-mortem examination
    
3. Modulation of the phase of the carrier wave
   - phase modulation

1. (Latin) between noon and midnight
   "let's meet at 8 P.M.";
   - post meridiem

Derived forms: PMs

See also: postmeridian

Type of: chief of state, examination, head of state, metal, metallic element, modulation, scrutiny

Part of: British Cabinet

Encyclopedia: Pm