U+0463 "ѣ" Cyrillic Small Letter Yat Unicode Character

U+0463 "ѣ" Cyrillic Small Letter Yat is a historic letter from the early Cyrillic alphabet, originally used in Old Church Slavonic and later in pre-reform Russian orthography to represent a distinct vowel sound that gradually merged with the sound of "е" (pronounced /ʲe/ or /e/) in most dialects. This character was a central symbol in the Russian language until the orthographic reform of 1918, which abolished the yat and replaced it with the letter "е" in almost all cases, a change that was highly controversial at the time due to its cultural and grammatical implications. Today, while largely obsolete, the yat remains an important artifact in historical linguistics, typography, and the study of Slavic languages.

General Properties

Code Point	U+0463
Version Added	1.1
Name	Cyrillic Small Letter Yat
Block	Cyrillic
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ѣ
HTML Hex Encoding	ѣ
UTF-8 Encoding	0xD1 0xA3
UTF-16 Encoding	0x0463
UTF-32 Encoding	0x00000463
C/C++/Java Escape	\u0463

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Lowercase	Yes
Simple Uppercase Code Point	"Ѣ" U+0462 Cyrillic Capital Letter Yat
Simple Titlecase Code Point	"Ѣ" U+0462 Cyrillic Capital Letter Yat
Uppercase Code Point	"Ѣ" U+0462 Cyrillic Capital Letter Yat
Titlecase Code Point	"Ѣ" U+0462 Cyrillic Capital Letter Yat
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Cyrillic
Script Extensions	Cyrillic
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Lower