Open O

Open o (majuscule: Ɔ, minuscule: ɔ) is a letter of the extended Latin alphabet. In the International Phonetic Alphabet, it represents the open-mid back rounded vowel. It is used in the orthographies of many African languages using the African reference alphabet.

"Ɔ" redirects here. It is not to be confused with Ↄ.
Ɔ ɔ
Ɔ ɔ

The Yucatec Maya language used Ɔ as a consonant in the orthography of the Colonial period. Now dz or tz' is preferred.

Unicode
Character information
PreviewƆɔ
Unicode nameLATIN CAPITAL LETTER OPEN OLATIN SMALL LETTER OPEN O
Encodingsdecimalhexdecimalhex
Unicode390U+0186596U+0254
UTF-8198 134C6 86201 148C9 94
Numeric character referenceƆƆɔɔ

On the Mac OS U.S. Extended keyboard, ɔ and Ɔ can be typed with ⌥ Option+: followed by c or C.

On a personal computer, ɔ can be typed by holding the ALT key and typing 596 on the number keypad. The capital Ɔ can be typed similarly by using ALT+390.

  • Ɔ with diacritics: ɔ́ ɔ̀ ɔ̃ ᶗ[1]
  • Uralic Phonetic Alphabet-specific symbols related to Ɔ :[2]
    • U+1D10 ᴐ LATIN LETTER SMALL CAPITAL OPEN O
    • U+1D12 ᴒ LATIN SMALL LETTER SIDEWAYS OPEN O
    • U+1D53 ᵓ MODIFIER LETTER SMALL OPEN O

Similar looking letters
The first of these Claudian letters is the antisigma.

Open o looks like a reversed letter 'C'. Claudius introduced a Ɔ (the antisigma) with the intention of replacing bs and ps.

Definition from Aasen (1873), Norsk ordbog med dansk forklaring, showing the Danish explanatory symbol “ɔ:”.

The Norwegian and Danish explanatory symbol (forklaringstegnet) can be typeset using the open o followed by a colon, thus: ɔ:. It is used for the meaning "namely", "id est", "scilicet" or similar.[3]

See also

References
  1. Constable, Peter (2004-04-19). "L2/04-132 Proposal to add additional phonetic characters to the UCS" (PDF).
  2. Everson, Michael; et al. (2002-03-20). "L2/02-141: Uralic Phonetic Alphabet characters for the UCS" (PDF).
  3. http://www.typografi.org/forklaringstegn/forklaringstegn.html


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