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December 2014 update

What's new: More than 500 new words, phrases, and senses have entered the Oxford English Dictionary in our latest update, which sees the inclusion of g’day, BYOD, and un-PC. Find out more >


New article: Explore our illustrated timeline highlighting 100 words that define the First World War


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planation, n.


The levelling of a landscape by erosion; (occas.) an instance of this.

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