U+A669 "ꙩ" Cyrillic Small Letter Monocular O Unicode Character

U+A669 "ꙩ" Cyrillic Small Letter Monocular O is a historical glyph used in early Cyrillic manuscripts, distinguished by a single dot or "eye" inside the bowl of the letter, in contrast to the more common binocular O which has two dots. This variant was employed primarily in medieval Slavic texts, often to denote a specific phonetic nuance or stylistic convention in the writing of Old Church Slavonic and related languages. It belongs to the Cyrillic Extended-B block and remains an important symbol for paleographers and linguists studying the evolution of Cyrillic script, though it is largely obsolete in modern usage.

General Properties

Code Point	U+A669
Version Added	5.1
Name	Cyrillic Small Letter Monocular O
Block	Cyrillic Extended-B
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ꙩ
HTML Hex Encoding	ꙩ
UTF-8 Encoding	0xEA 0x99 0xA9
UTF-16 Encoding	0xA669
UTF-32 Encoding	0x0000A669
C/C++/Java Escape	\ua669

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	"Ꙩ" U+A668 Cyrillic Capital Letter Monocular O
Simple Titlecase Code Point	"Ꙩ" U+A668 Cyrillic Capital Letter Monocular O
Uppercase Code Point	"Ꙩ" U+A668 Cyrillic Capital Letter Monocular O
Titlecase Code Point	"Ꙩ" U+A668 Cyrillic Capital Letter Monocular O
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