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].

gollark: ↑ politics
gollark: ☑️ ☑️ ☑️ ☑️ ☑️
gollark: And English words don't meaningfully *have* precise technical definitions.
gollark: If you don't have a political view on some topic, you will not do those due to that.
gollark: People with political views which aren't "I don't have a political view" will probably talk about it, take actions based on it, maybe shun or mock people with sufficiently different ones, sort of thing.

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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