U+A66B "ꙫ" Cyrillic Small Letter Binocular O Unicode Character

U+A66B "ꙫ" Cyrillic Small Letter Binocular O is a rare and historic typographic variant used in early Cyrillic manuscripts, representing an unusual form of the letter O that resembles two circles or lenses joined together, symbolizing eyes. This character was primarily employed in Old Church Slavonic texts, where it served as a decorative or symbolic glyph, often appearing in sacred or ornamental contexts rather than in common lexicon. It belongs to the Cyrillic Extended-B block and is distinct from standard O forms, reflecting the calligraphic experimentation and regional scribal traditions of medieval Slavic writing, though it has largely fallen out of modern usage.

General Properties

Code Point	U+A66B
Version Added	5.1
Name	Cyrillic Small Letter Binocular O
Block	Cyrillic Extended-B
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ꙫ
HTML Hex Encoding	ꙫ
UTF-8 Encoding	0xEA 0x99 0xAB
UTF-16 Encoding	0xA66B
UTF-32 Encoding	0x0000A66B
C/C++/Java Escape	\ua66b

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	"Ꙫ" U+A66A Cyrillic Capital Letter Binocular O
Simple Titlecase Code Point	"Ꙫ" U+A66A Cyrillic Capital Letter Binocular O
Uppercase Code Point	"Ꙫ" U+A66A Cyrillic Capital Letter Binocular O
Titlecase Code Point	"Ꙫ" U+A66A Cyrillic Capital Letter Binocular 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