pm [ ,pi: 'em ]

• n.
  • an examination and dissection of a dead body to determine cause of death or the changes produced by disease

    同义词： autopsy necropsy postmortem post-mortem postmortem examination post-mortem examination

  • 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

    同义词： promethium atomic number 61

  • the person who holds the position of head of the government in England

    同义词： Prime Minister premier

  • modulation of the phase of the carrier wave

    同义词： phase modulation

• adj. after noon

  同义词： post meridiem p.m.

• adv. between noon and midnight

  同义词： post meridiem P.M.

以上来源于: WordNet