period
noun
/ˈpi.ɹɪd/
,
/ˈpɪə.ɹi.əd/
,
/ˈpɪə.ɹɪ.əd/
,
/ˈpɪɚ.i.əd/
,
/ˈpɪɹ.i.əd/
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- The length of time during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet. [from 17th c.]
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[[#
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- (now, chiefly, North America, Philippines) The punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation).
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点
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- (geology) A geochronologic unit of millions to tens of millions of years; a subdivision of an era, and subdivided into epochs.
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時間
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- (chemistry) A row in the periodic table of the elements. [from 19th c.]
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无穷级数
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period
interjection
/ˈpi.ɹɪd/
,
/ˈpɪə.ɹi.əd/
,
/ˈpɪə.ɹɪ.əd/
,
/ˈpɪɚ.i.əd/
,
/ˈpɪɹ.i.əd/
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- (chiefly, North America) That's final; that's the end of the matter (analogous to a period ending a sentence); end of story.
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句号
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periodization
noun
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- The process of categorizing something (e.g. history) into named periods.
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历史分期
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