Ablaut

Noun

  • (linguistics) The substitution of one root vowel for another, thus indicating a corresponding modification of use or meaning; vowel permutation; as, get, gat, and got; sing and song; hang and hung, distinct from the phonetic influence of a succeeding vowel. [Mid 19th century.]

Verb

  • (transitive, linguistics) To cause to change a vowel.
  • (intransitive, linguistics, of a vowel-containing linguistic component) To undergo a change of vowel.

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