In linguistics, apophony (also known as ablaut, (vowel) gradation, (vowel) mutation, alternation, internal modification, stem modification, stem alternation...

English record /ˈrɛkərd/ (noun) ↔ /rɨˈkɔrd/ "to make a record" Consonantal apophony, such as the initial-consonant mutations in Celtic languages, also exists...

(/ˈæblaʊt/ AB-lowt, from German Ablaut pronounced [ˈaplaʊt]) is a system of apophony (regular vowel variations) in the Proto-Indo-European language (PIE). An...

languages characteristically make frequent use of apophony in the form of ablaut. Berber apophony has been historically analyzed as functioning similarly...

The Northern Bavarian verbs are also subject to both vowel change and apophony. The non-finite forms have one three endings: [∅], [n] and [ɐ]. The first...

a stem remains unmodified during inflection with few exceptions due to apophony (for example in Polish, miast-o ("city") and w mieść-e ("in the city");...

Finnish and Estonian since they involve consonant gradation but also vowel apophony. Inflections in fusional languages tend to fall in two patterns, based...

feminine) to the singular form. The internal plural employs vowel quality or apophony to pluralize words, similar to English man vs. men and goose vs. geese...

changing their stem vowel (e.g., binden became bound, a process called apophony), as in Modern English. With the discontinuation of the Late West Saxon...

understanding of morphology and of ablaut in the wake of Kuryłowicz's 1956 Apophony in Indo-European, who in 1927 pointed out the existence of the Hittite...