Cyrillic script
The Cyrillic script ( ) is a writing system used for various languages across Eurasia and is used as the national script in various Slavic languages, Slavic, Turkic languages, Turkic, Mongolic languages, Mongolic, Uralic languages, Uralic, Caucas ...
. It is derived from the initial form of the Arabic letter hāʾ, . In the Unicode
Unicode, formally the Unicode Standard, is an information technology Technical standard, standard for the consistent character encoding, encoding, representation, and handling of Character (computing), text expressed in most of the world's wri ...
text-encoding standard, this letter is called "Abkhazian Ha". Its form bears some similarities to the (Θ θ/). In 
English
English usually refers to:
* English language
English is a West Germanic languages, West Germanic language first spoken in History of Anglo-Saxon England, early medieval England, which has eventually become the World language, leading lan ...
, O-hook is commonly romanized
Romanization or romanisation, in linguistics
Linguistics is the scientific study of language, meaning that it is a comprehensive, systematic, objective, and precise study of language. Linguistics encompasses the analysis of every aspec ...
using the Latin letter O with dot below (Ọ ọ) but its ISO 9 transliteration is the Ò, Latin letter O with grave accent (Ò ò).
O-hook is used in the alphabet of the Abkhaz language where it represents the labial-palatal approximant , the sound of in French phonology, French "" (). It is placed between O and Pi (letter), Π in the alphabet.
Computing codes
* In Unicode version 1.0, the letters were called CYRILLIC CAPITAL/SMALL LETTER O HOOK.References
Further reading
* Daniels, Peter D. ''The World's Writing Systems.'' Oxford University Press, 1996. {{Cyrillic-alphabet-stub