Ѳ

Numeric value:	9
Slavic letters
А Б В Г Ґ Д Ђ Ѓ Е Ѐ Ё Є Ж З Ѕ И Ѝ І Ї Й Ј К Л Љ М Н Њ О П Р С Т Ћ Ќ У Ў Ф Х Ц Ч Џ Ш Щ Ъ Ы Ь Э Ю Я
Non-Slavic letters
Ӑ А̄ А̊ А̃ Ӓ Ӓ̄ Ә Ә́ Ә̃ Ӛ Ӕ Ғ Г̧ Г̑ Г̄ Ҕ Ӻ Ӷ Ԁ Ԃ Ꚃ Ꚁ Ꚉ Ԫ Ԭ С́ Ӗ Е̄ Е̃ Ё̄ Є̈ Ӂ Җ Ꚅ Ӝ Ԅ Ҙ Ӟ З́ Ԑ Ԑ̈ Ӡ Ԇ Ӣ И̃ Ҋ Ӥ Қ Ӄ Ҡ Ҟ Ҝ Ԟ Ԛ Ӆ Ԯ Ԓ Ԡ Ԉ Ԕ Ӎ Ӊ Ң Ԩ Ӈ Ҥ Ԣ Ԋ О̆ О̃ О̄ Ӧ Ө Ө̄ Ӫ Ҩ Ԥ Ҧ Р̌ Ҏ Ԗ Ҫ Ԍ Ꚑ Ҭ Ꚋ Ꚍ Ԏ У̃ Ӯ Ӱ Ӱ́ Ӳ Ү Ү́ Ұ Х̑ Ҳ Ӽ Ӿ Һ Һ̈ Ԧ Ꚕ Ҵ Ꚏ Ҷ Ӵ Ӌ Ҹ Ꚓ Ꚗ Ꚇ Ҽ Ҿ Ы̆ Ы̄ Ӹ Ҍ Э̆ Э̄ Э̇ Ӭ Ӭ́ Ӭ̄ Ю̆ Ю̈ Ю̈́ Ю̄ Я̆ Я̄ Я̈ Ԙ Ԝ Ӏ
Archaic letters
Ꙁ Ꙃ Ꙅ Ꙇ Ꙉ Ҁ Ѻ ОУ Ꙋ Ѡ Ѽ Ꙍ Ѿ Ꙏ Ѣ Ꙑ Ꙓ Ꙕ Ꙗ Ѥ Ѧ Ꙙ Ѫ Ꙛ Ѩ Ꙝ Ѭ Ѯ Ѱ Ѳ Ѵ Ѷ Ꙟ Ꙡ Ꙣ Ꙥ Ꙧ Ꙩ Ꙫ Ꙭ ꙮ Ꚙ Ꚛ
List of Cyrillic letters Cyrillic digraphs

Fita (Ѳ ѳ; italics: Ѳ ѳ) is a letter of the Early Cyrillic alphabet. The shape and the name of the letter are derived from the Greek letter Theta (Θ θ). Ѳ is romanized using Þ.

In the Cyrillic numeral system, Fita has a value of 9.

In traditional (Church Slavonic) fonts, the central line is typically about twice the width of letter's body and has serifs similar to ones on the letter T: . Sometimes the line is drawn as low as the baseline which makes the letter almost identical to Д and may cause reading difficulties.

In modern-style (Petrine or civil) fonts, depending on the typeface, the centre line may be either straight or waving, matching the centre line of "Э" (thus, the sample shape provided in the Unicode chart is wrong.) In regular textfonts, both ends of the line touch the "O". Stylish fonts may use a shorter line, either placed entirely inside the "O" (a standard shape for Greek uppercase Theta) or touching the circle at one point.

The traditional Russian name of the letter is фита́ fita (or, in pre-1918 spelling, ѳита́). Fita was mainly used to write proper names and loanwords derived from or via Greek. Russians pronounced these names with the sound /f/ instead of /θ/ (like the pronunciation of ⟨th⟩ in "thin"), for example "Theodore" was pronounced as "Feodor" (now "Fyodor").

Early texts in Russian (and in the Russian recension of Church Slavonic) demonstrate an increasing interchangeability of Ѳ and Ф. Some scribes preferred one of the two letters and ignored the other. There existed an orthographical system to write Ѳ in an initial position and Ф elsewhere. Since the middle of the 17th century, selection between Ѳ and Ф was re-adjusted to exactly follow the Greek origin, the system still in use in Church Slavonic orthography.

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Wikipedia