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English definition of “posterior”

posterior

adjective [before noun] uk   /pɒsˈtɪə.ri.ər/ us    /pɑːˈstɪr.i.ɚ/
specialized anatomy positioned at or towards the back formal later in time
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posterior

noun uk   /pɒsˈtɪə.ri.ər/ us    /pɑːˈstɪr.i.ɚ/ humorous
your posterior your bottom: If you would kindly move your posterior just a fraction to the right, I might get by.
(Definition of posterior from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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