# Broad On

The Cyrillic script :
Slavic letters :
| А | А̀ | А̂ | А̄ | Ӑ | Ӓ | Б | В |
| Г | Ґ | Д | Ђ | Ѓ | Е | Ѐ | Е̂ |
| Е̄ | Ё | Є | Є́ | Ж | З | З́ | Ѕ |
| И | І | І́ | Ї | Ꙇ | Ѝ | И̂ | Ӣ |
| Й | Ӥ | Ј | К | Л | Љ | М | Н |
| Њ | О | О̀ | О̂ | О̄ | Ӧ | П | Р |
| С | С́ | Т | Ћ | Ќ | У | У̀ | У̂ |
| Ӯ | Ў | Ӱ | Ф | Х | Ц | Ч | Џ |
| Ш | Щ | Ꙏ | Ъ | Ъ̀ | Ы | Ь | Ѣ |
| Э | Ю | Ю̀ | Я | Я̀ | ʼ | ˮ | |
Non-Slavic letters :
| А̊ | А̃ | Ӓ̄ | Ӕ | Ә | Ә́ | Ә̃ | Ӛ |
| В̌ | Ԝ | Г̑ | Г̇ | Г̣ | Г̌ | Г̂ | Г̆ |
| Г̈ | Г̊ | Ҕ | Ғ | | Ӻ | Ғ̌ | Ғ̊ |
| Ӷ | Г̡ | Д́ | Д̌ | Д̈ | Д̣ | Д̆ | Ӗ |
| Е̃ | Ё̄ | Є̈ | Ԑ | Ԑ̈ | Җ | Ӝ | Ӂ |
| Ж̣ | Ҙ | Ӟ | З̌ | З̣ | З̆ | Ӡ | И̃ |
| И̇ | Ҋ | Қ | Ӄ | Ҡ | Ҟ | Ҝ | К̣ |
| К̊ | Қ̊ | Ԛ | ᴫ | Л́ | Ӆ | Ԯ | Ԓ |
| Л̈ | Ӎ | ᵸ | Н́ | Ӊ | Ң | Ԩ | Ӈ |
| Ҥ | О̆ | О̃ | Ӧ̄ | Ө | Ө̄ | Ө́ | Ө̆ |
| Ӫ | Ԥ | П̈ | Р̌ | Ҏ | С̌ | Ҫ | С̣ |
| С̱ | Т́ | Т̈ | Т̌ | Т̇ | Т̣ | Ҭ | Ᲊ |
| У̃ | У̌ | Ӳ | У̊ | Ӱ̄ | Ұ | Ү | Ү́ |
| Х̣ | Х̱ | Х̮ | Х̑ | Х̌ | Ҳ | Ӽ | Х̊ |
| Ӿ | Ӿ̊ | Һ | Һ̈ | Ԧ | Ц̌ | Ц̈ | Ҵ |
| Ҷ | Ҷ̣ | Ӵ | Ӌ | | Ҹ | Ч̇ | Ч̣ |
| Ҽ | Ҿ | Ш̣ | ꚜ | Ы̆ | Ы̄ | Ӹ | ꚝ |
| Ҍ | Ҩ | Э̆ | Э̄ | Э̇ | Ӭ | Ӭ́ | Ӭ̄ |
| Ю̆ | Ю̈ | Ю̄ | Я̆ | Я̄ | Я̈ | Ӏ | |
Archaic or unused letters :
А̨Б̀Б̣Б̱В̀Г̀Г̧Г̄Г̓Г̆Ҕ̀Ҕ̆ԀД̓Д̀Д̨ԂꚀꙢЕ̇Е̨Ж̀Ж̑ꙂꙄЏ̆ꚄꚄ̆ꙀЗ̀З̑ԄԆꚈԪꚂꚔІ̂І̣І̨Ј̵Ј̃ꙈК̓К̀К̆Ӄ̆К̑К̇К̈К̄ԞК̂Л̀ԠꙤԈЛ̑Л̇ԔМ̀М̃ꙦН̀Н̄Н̧Н̃ԊԢН̡ѺꙨꙪꙬꙮꚘꚚП̓П̀П́ҦП̧П̑ҀԚ̆Р́Р̀Р̃ԖС̀С̈ԌҪ̓Т̓Т̀ԎТ̑ꚊТ̧ꚌꚌ̆ѸꙊУ̇У̨ꙋ́Ф̑Ф̓Х́Х̀Х̆Х̇Х̧Х̾Х̓һ̱ѠꙌѼѾꙠЦ̀Ц́Ц̓ꚎꚎ̆ꚐЧ́Ч̀Ч̆Ч̑Ч̓ԬꚒꚆꚆ̆Ҽ̆Ш̀Ш̆Ш̑Щ̆ꚖꚖ̆Ъ̄Ъ̈Ъ̈̄ꙐЫ̂Ы̃Ѣ́Ѣ̈Ѣ̆ꙒЭ̨Э̂ꙔЮ̂ꙖЯ̈Я̂Я̨ԘѤѦꙘѪꙚѨꙜѬѮѰѲѴѶꙞ :
List of Cyrillic letters
List of Cyrillic multigraphs :
vte :
Broad On (Ѻ ѻ; italics: Ѻ ѻ) is a positional and orthographical variant of the Cyrillic letter O (О о) (here "on" (oнъ, onŭ) is the acrophonic name of the Cyrillic О in early Cyrillic alphabets, e.g., in the old Russian alphabet; these names are still in use in the Church Slavonic alphabet.
Broad On is used only in the Church Slavonic language. In its alphabet (in primers and grammar books), broad and regular shapes of О/о share the same position, as they are not considered different letters. Uppercase is typically represented by broad Ѻ, and lowercase is either regular о or dual: both broad ѻ and regular о (in the same way as Greek uppercase Σ is accompanied with two lowercases σ, ς). Phonetically, broad Ѻ/ѻ is the same as regular О/о.
In standard Church Slavonic orthography (since the middle of the 17th century until present time), the broad shape of letter On is used instead of the regular shape of the same letter in the following cases:
* as the first letter of a word's root, which could fall:
** at the beginning of the word: (ѻгнь, ѻтрокъ),
** after a prefix: (праѻтецъ),
** after another root in compound words (ѻбоюдуѻстрый);
* in the middle of the root in two geographical names (іѻрданъ—Jordan River, іѻппіа—city of Jaffa) and their derivatives;
* as the numerical sign to represent the number 70. (However, Church Slavonic editions printed outside the Russian Empire have often ignored the last rule and used regular о as the numerical sign.)
Historically, Broad On was also used in the later Old Russian period, including documents, letters and other vernacular texts, to signal the initial position of a word or a syllable or occasionally to mark a closed vowel (developed in North Russian dialects since the 14th century). It is found in birch bark manuscripts and in some other Russian texts. Other glyphs could be used in the same functions, including Monocular O and Cyrillic Omega.

## Name

Broad On has no standard traditional name. The names used in literature (e.g. wide on) are just shape-based or functional descriptions.
* A name from certain Russian sources, он польское, on pol'skoye (literally, "Polish O"), also points to the round shape of the letter, because Latin fonts from Poland had round "O", and the typical old Cyrillic "O" was lens-shaped and condensed.
* Now the character is often being referred to by its conventional Unicode name "round Omega", also matching an historic wider letterform (notched at top and bottom, rather than round in modern Church Slavonic transcriptions) that looked more like the Greek Omega.

## Computing codes

Character information :
| Preview | Ѻ | Ѻ | ѻ | ѻ |
| Unicode name | CYRILLIC CAPITAL LETTER ROUND OMEGA | CYRILLIC CAPITAL LETTER ROUND OMEGA | CYRILLIC SMALL LETTER ROUND OMEGA | CYRILLIC SMALL LETTER ROUND OMEGA |
| Encodings | decimal | hex | dec | hex |
| Unicode | 1146 | U+047A | 1147 | U+047B |
| UTF-8 | 209 186 | D1 BA | 209 187 | D1 BB |
| Numeric character reference | &#1146; | &#x47A; | &#1147; | &#x47B; |