In phonetics, a triphthong ( , ) (from Ancient Greek τρίφθογγος , ) is a syllable vowel combination involving a quick but smooth movement of the articulator from one vowel quality to another that passes over a third. While "pure" vowels, or , are said to have one target articulator position, have two and triphthongs three.
Triphthongs are not to be confused with disyllabic sequences of a diphthong followed by a monophthong, as in German Feuer 'fire', where the final vowel is longer than those found in triphthongs.
On the other hand, are not treated as phonetic consonants when they arise from vocalization of , or as they do not share almost all of their features with those three.
They have arisen due to the vocalization of in the syllable coda; compare the last two with Standard German Gefühl and Schule , the last one with a schwa not present in the Bernese word.
As and become and respectively before , most instances of and are words with the suffix "-er", such as player and slower. Other instances are loanwords, such as boa.
are sometimes transcribed as , or similarly.
The last two are mostly restricted to European Spanish. In Latin American Spanish (which has no distinct vosotros form), the corresponding words are cambian and cambien , with a rising-opening diphthong followed by a nasal stop and initial, rather than final stress. In phonology, are analyzed as a monosyllabic sequence of three vowels: . In IPA/Spanish, those triphthongs are transcribed : , , ,
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