U+0389 "Ή" Greek Capital Letter Eta with Tonos Unicode Character

U+0389 "Ή" Greek Capital Letter Eta with Tonos is a precomposed version of the Greek capital letter eta (Η) combined with the tonos accent, which in modern Greek marks the stressed syllable in a word. This character is used primarily in the Greek script to indicate the high pitch or stress on the vowel eta when it appears as a capital letter, typically at the beginning of a sentence or in all-caps text. It belongs to the Greek and Coptic block of Unicode and is distinct from the sequence of a plain capital eta followed by a combining tonos, as it is encoded as a single, atomic character for compatibility and ease of use in legacy systems.

General Properties

Code Point	U+0389
Version Added	1.1
Name	Greek Capital Letter Eta with Tonos
Unicode 1.0 Name	Greek Capital Letter Eta Tonos
Block	Greek and Coptic
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"Η" U+0397 Greek Capital Letter Eta "́" U+0301 Combining Acute Accent

Encodings

HTML Decimal Encoding	Ή
HTML Hex Encoding	Ή
UTF-8 Encoding	0xCE 0x89
UTF-16 Encoding	0x0389
UTF-32 Encoding	0x00000389
C/C++/Java Escape	\u0389

Unicode Properties

NFC Quick Check	Yes
NFKC Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Uppercase	Yes
Simple Lowercase Code Point	"ή" U+03AE Greek Small Letter Eta with Tonos
Lowercase Code Point	"ή" U+03AE Greek Small Letter Eta with Tonos
Simple Case Folding	"ή" U+03AE Greek Small Letter Eta with Tonos
Case Folding	"ή" U+03AE Greek Small Letter Eta with Tonos
Cased	Yes
Changes When Casefolded	Yes
Changes When Casemapped	Yes
Changes When Lowercased	Yes
Changes When NFKC Casefolded	Yes
NFKC Casefold	"ή" U+03AE Greek Small Letter Eta with Tonos
NFKC Simple Casefold	"ή" U+03AE Greek Small Letter Eta with Tonos
Script	Greek
Script Extensions	Greek
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	Upper