U+1E51 "ṑ" Latin Small Letter O with Macron and Grave Unicode Character

U+1E51 "ṑ" Latin Small Letter O with Macron and Grave is a precomposed character used primarily in Latin script orthographies, notably in the transcription of certain languages such as Old Church Slavonic or in scholarly linguistic notation, where it represents the vowel "o" modified by both a macron (indicating a long or high tone) and a grave accent (often denoting a falling tone or a specific stress pattern). It is an extension of the basic Latin alphabet with combined diacritical marks, and its usage helps ensure precise phonetic representation in historical or phonetic contexts.

General Properties

Code Point	U+1E51
Version Added	1.1
Name	Latin Small Letter O with Macron and Grave
Block	Latin Extended Additional
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"ō" U+014D Latin Small Letter O with Macron "̀" U+0300 Combining Grave Accent

Encodings

HTML Decimal Encoding	ṑ
HTML Hex Encoding	ṑ
UTF-8 Encoding	0xE1 0xB9 0x91
UTF-16 Encoding	0x1E51
UTF-32 Encoding	0x00001E51
C/C++/Java Escape	\u1e51

Unicode Properties

NFC Quick Check	Yes
NFKC Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Lowercase	Yes
Simple Uppercase Code Point	"Ṑ" U+1E50 Latin Capital Letter O with Macron and Grave
Simple Titlecase Code Point	"Ṑ" U+1E50 Latin Capital Letter O with Macron and Grave
Uppercase Code Point	"Ṑ" U+1E50 Latin Capital Letter O with Macron and Grave
Titlecase Code Point	"Ṑ" U+1E50 Latin Capital Letter O with Macron and Grave
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Latin
Script Extensions	Latin
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