Open O

Ɔ ɔ

Ɔ ɔ

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.

Unicode

Character	Ɔ		ɔ
Unicode name	LATIN CAPITAL LETTER OPEN O		LATIN SMALL LETTER OPEN O
Encodings	decimal	hex	decimal	hex
Unicode	390	U+0186	596	U+0254
UTF-8	198 134	C6 86	201 148	C9 94
Numeric character reference	Ɔ	Ɔ	ɔ	ɔ

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

Similar letters

Johann Martin Schleyer proposed an alternate form with a broken O for Ö in Volapük but it was rarely used.

The first of these Claudian letters is the antisigma.

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

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

See also

• Open E
• Writing systems of Africa § Latin script