Definition of post meridiem in English:

post meridiem

adverb ˌpəʊs(t) mɪˈrɪdɪəm

After midday; applied to the hours between noon and midnight. Usually abbreviated P.M., p.m., or pm.

Origin

Mid 17th century; earliest use found in William Lilly (1602–1681), astrologer. From classical Latin post merīdiem after midday from post after + merīdiem, accusative of merīdiēs midday.

Definition of post meridiem in US English:

post meridiem

adverbˌpəʊs(t) mɪˈrɪdɪəm

After midday; applied to the hours between noon and midnight. Usually abbreviated P.M., p.m., or pm.

Origin

Mid 17th century; earliest use found in William Lilly (1602–1681), astrologer. From classical Latin post merīdiem after midday from post after + merīdiem, accusative of merīdiēs midday.

词汇	post meridiem
释义	Definition of post meridiem in English: post meridiem adverb ˌpəʊs(t) mɪˈrɪdɪəm After midday; applied to the hours between noon and midnight. Usually abbreviated P.M., p.m., or pm. Origin Mid 17th century; earliest use found in William Lilly (1602–1681), astrologer. From classical Latin post merīdiem after midday from post after + merīdiem, accusative of merīdiēs midday. Definition of post meridiem in US English: post meridiem adverbˌpəʊs(t) mɪˈrɪdɪəm After midday; applied to the hours between noon and midnight. Usually abbreviated P.M., p.m., or pm. Origin Mid 17th century; earliest use found in William Lilly (1602–1681), astrologer. From classical Latin post merīdiem after midday from post after + merīdiem, accusative of merīdiēs midday.
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