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English definition of “declension”

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declension

noun uk   /dɪˈklen.ʃən/ us  

declension noun (GRAMMAR)

[C] a group of nouns or adjectives that decline in the same way: How many declensions are there in German? Rex is in the third declension [U] the act of declining a word, or the way you decline it
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declension noun (MEDICINE)

[U] specialized medical a situation in which a medical condition gets worse
(Definition of declension from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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