Article · Wikipedia archive · Last revised Jun 30, 2026

Open front rounded vowel

The open front rounded vowel, or low front rounded vowel, is a type of vowel sound that has not been confirmed to be phonetic in any spoken language, but is occasionally used in phonemic transcriptions for some Germanic languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɶ⟩, a small capital ⟨Œ⟩. It was added to the IPA vowel chart to balance the quadrilateral by filling in the remaining gap for a rounded equivalent of.

Last revised
Jun 30, 2026
Read time
≈ 4 min
Length
968 w
Citations
22
Source
Open front rounded vowel
ɶ
IPA number312
Audio sample
Encoding
Entity (decimal)ɶ
Unicode (hex)U+0276
X-SAMPA&
Braille⠔ (braille pattern dots-35)⠪ (braille pattern dots-246)

The open front rounded vowel, or low front rounded vowel,1 is a type of vowel sound that has not been confirmed to be phonetic in any spoken language,2 but is occasionally used in phonemic transcriptions for some Germanic languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɶ⟩, a small capital Œ. It was added to the IPA vowel chart to balance the quadrilateral by filling in the remaining gap for a rounded equivalent of [a].3

While the IPA chart lists this vowel as the rounded equivalent of [a], studies of formant acoustics suggest it is closer to the rounded homologue of [æ].

A phoneme transcribed with ⟨ɶ⟩ is reported for the Amstetten dialect of Bavarian; however, it is phonetically open-mid [œ], pairing with unrounded phonemic /æ/ (phonetic [ɛ]).4 Similarly, certain studies of Danish56 and Swedish7 use ⟨ɶ⟩ to transcribe a phoneme that is phonetically open-mid [œ] or near-open [œ̞] (depending on the analysis), where phonemic /œ/ is phonetically raised closer to mid [œ̝].68 In Maastrichtian Limburgish, the vowel transcribed with ⟨ɶː⟩ in the Mestreechter Taol dictionary9 is phonetically centralized, with a height between open-mid [œ̈ː] and near-open [œ̞̈ː]; phonologically, it is the long counterpart of /œ/.10

Features

  • Its vowel height is open, also known as low, which means the tongue is positioned far from the roof of the mouth – that is, low in the mouth.
  • Its vowel backness is front, which means the tongue is positioned forward in the mouth without creating a constriction that would be classified as a consonant. Rounded front vowels are often centralized, which means that often they are in fact near-front.
  • It is rounded, which means that the lips are rounded rather than spread or relaxed.

Occurrence

Near-open front rounded vowel
œ̞
ɶ̝

No language has been reported to have a phonetically true open realization. The table below provides examples of near-open realizations (thus being rounded homologues of [æ], i.e. a near-open front rounded vowel), which are phonetically raised compared to cardinal [ɶ], and also often centralized (similar to [ɞ̞], but not as central). In the case of the latter, these may be transcribed as mid-centralized [ɶ̽] (alternatively, [ɶ̝̈] or [œ̞̈]).

Language Word IPA Meaning Notes
Danish Some speakers6 grøn [ˈkʁɶ̽nˀ] 'green' Near-open and centralized;5 allophone of /ø/ between [ʁ] and /v/ ([w]),11 and of /œ/ between [ʁ] and a nasal;12 though becoming [ʌ̞̈] in the latter environments.13 Historically also an allophone of /ø/ before /j/, but likewise has merged to [ʌ̞̈].14 May instead be analyzed as open-mid [œ].6 See Danish phonology
Limburgish Weert dialect15 bui [bɶ̽j] 'shower' Near-open and centralized; allophone of /œ/ before /j/ in non-diphthong sequences.15 See Weert dialect phonology
Swedish Stockholm öra [ˈɶ̝̂ːrä] 'ear' Near-open; realization of the phoneme /øː/ (which Pelzer & Boersma (2019) recommend transcribing instead as /œː/).16 Corresponds to [œ̫ː] in Linköping and Lund dialects. An acoustic study by Persson (2024) points instead to a potentially open-mid central realization [œ̈ː].8 See Swedish phonology
See also

See also

Notes

Notes

  1. While the International Phonetic Association prefers the terms "close" and "open" for vowel height, many linguists use "high" and "low".
  2. Jones (1956), p. 15: "This cardinal sound is not known to occur in any language."
  3. Wells (1975), p. 52: "Although it may seldom or never be needed for phonemic transcription, I feel that for completeness' sake, and to fill an awkward gap in our vowel chart, we should recognize this symbol for an open front rounded vowel."
  4. Traunmüller (1982), cited in Ladefoged & Maddieson (1996), p. 290
  5. Grønnum (1998), p. 100.
  6. Basbøll (2005), pp. 46–48.
  7. Riad (2014), p. 38.
  8. Persson (2024), Fig. 1, 7.
  9. "Mestreechter Taol".
  10. Gussenhoven & Aarts (1999), pp. 159, 161–162, 164.
  11. Grønnum (2005), pp. 60, 288.
  12. Grønnum (2005), pp. 61, 396.
  13. Grønnum (2005), p. 333.
  14. Grønnum (2005), pp. 331–333.
  15. Heijmans & Gussenhoven (1998), p. 110.
  16. Pelzer & Boersma (2019), pp. 1146–1147.
References

References

External links