U+1CDB9 "𜶹" Block Octant-23478 Unicode Character

U+1CDB9 "𜶹" Block Octant-23478 is a rarely encountered symbol belonging to the Supplementary Multilingual Plane, specifically within a specialized block designed for experimental or historic diagrammatic notation. Its official name refers to a "block octant" which suggests a graphic component representing one eighth of a cubic or three dimensional block structure, possibly used in ancient or technical drafting, geometry, or esoteric writing systems. As of the current Unicode Standard, this character has no widely recognized semantic value or common usage in modern languages, and it exists primarily as a placeholder or a structural element in theoretical encoding schemes. Due to its obscure nature, it is not supported by most standard fonts and typically requires dedicated coverage or fallback rendering to display correctly.

General Properties

Code Point	U+1CDB9
Version Added	16.0
Name	Block Octant-23478
Block	Symbols for Legacy Computing Supplement
General Category	Other Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	𜶹
HTML Hex Encoding	𜶹
UTF-8 Encoding	0xF0 0x9C 0xB6 0xB9
UTF-16 Encoding	0xD833 0xDDB9
UTF-32 Encoding	0x0001CDB9
C/C++/Java Escape	\ud833\uddb9

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
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other