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UKAblaut
/ˈablaʊt/
/ˈæblaʊt/Ablaut
[NOUN]1
a phonological phenomenon where a vowel in a word changes systematically to indicate grammatical or derivational distinctions, often resulting in different word forms or meanings
Examples
1. This system, the ablaut, can still be heard today in irregular verbs: Dig, dug.
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