The substitution of one root vowel for another thus indicating a corresponding modification of use or meaning vowel permutation as get gat got sing song hang hung
- a vowel whoever high quality or size is altered to indicate linguistic distinctions (like sing sang sung song)
- The replacement of one root vowel for another, therefore showing a matching modification of use or definition; vowel permutation; because, get, gat, got; sing, song; hang, hung.
"systematic vowel alteration when you look at the root of a word to indicate colors of definition or tense," a characteristic of Indo-European languages, 1849, from German Ablaut, virtually "off-sound," coined by J.P. Zweigel in 1568 from ab "off" + Laut "sound, tone," from Old large German hlut (see listen). Popularized by Jacob Grimm.
- vowel gradation
- gradation [of vowels] [in historic linguistics]
(letter.) The substitution of 1 root vowel for the next, therefore suggesting a corresponding adjustment of good use or meaning; vowel permutation; since, get, gat, got; sing, tune; hang, hung.