元音和谐律
元音和谐律，又称元音调和（vowel harmony），是阿尔泰语系、乌拉尔语系等的语言特色之一。这个定律指一个词语的后缀一定会跟词根的元音在某种程度上相一致。
除了阿尔泰语系以外，楚科奇语等语言中也有特殊的元音和谐。另外，非洲尼日尔尔-刚果语系的许多语言，包括多威语、伊博语和许多班图语族的语言，亦有着以舌根位置为基础的元音和谐的现象存在。现代日语是没有元音和谐的，但有语言学家认为上古日语存在元音和谐，并以此作为将日语归属为阿尔泰语系的根据之一。
Vowel harmony
中文百科
英语百科
Vowel harmony 元音和谐律
![A diagram illustrating vowel harmony in Finnish.](/Images/godic/202502/20/Finnish_vowel_harmony_Venn_diagram.svg5225.png")
![Finnish vowel harmony and case agreement exemplified by mahdollisissa yllättävissä tilanteissa (](/Images/godic/202502/20/Finnish_vowel_harmony5225.jpg")
Vowel harmony is a type of long-distance assimilatory phonological process involving vowels that occurs in some languages. In languages with vowel harmony, there are constraints on which vowels may be found near each other. Many agglutinative languages have vowel harmony.
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