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pm
abbreviation

or p.m. /ˌpiː ˈem/

Related words
  1. used after a time for showing that it is between noon and midnight 下午(用于时间之后)

    3.30 pm 下午3点半

     Synonyms and related words
Word story
From the Latin expression post meridiem meaning ‘after noon'.
PM
noun [C] British informal /ˌpiː ˈem/
singularPM
pluralPMs
  1. 1
    a prime minister 首相

    an appointment with the PM 与首相的约见

     Synonyms and related words
  2. From our crowdsourced Open Dictionary
    2
    particulate matter: the mixture of solid particles and liquid droplets in the air

    PM can be naturally occurring or human made.

    Fine particulate matter (PM2.5) is an air pollutant that is a concern for people's health when levels in air are high.

    Submitted from United Kingdom on 22/02/2018

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