declension
noun uk/dɪˈklen.ʃən/ us/dɪˈklen.ʃən/
(GRAMMAR)
[ C ]（名词或形容词的）词形变化;变格
a group of nouns or adjectives that decline in the same way
How many declensions are there in German? 德语有几种词形变化？
Rex is in the third declension Rex 属于第三类词形变化。
[ U ]词形变化;词形变化规则
the act of declining a word, or the way you decline it
Compare: conjugation
(MEDICINE)
[ U ] medical specialized（病情的）加重，变严重
a situation in which a medical condition gets worse