U+1F55 "ὕ" Greek Small Letter Upsilon with Dasia and Oxia Unicode Character

U+1F55 "ὕ" Greek Small Letter Upsilon with Dasia and Oxia is a historical letter used in polytonic Greek orthography, combining the vowel upsilon with two diacritical marks: the dasia (a rough breathing mark indicating an initial /h/ sound in ancient Greek) and the oxia (an acute accent denoting a high pitch or stress). This character appears in classical and liturgical texts to represent a specific phonetic and tonal nuance that was essential in ancient Greek pronunciation and poetic meter.

General Properties

Code Point	U+1F55
Version Added	1.1
Name	Greek Small Letter Upsilon with Dasia and Oxia
Block	Greek Extended
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"ὑ" U+1F51 Greek Small Letter Upsilon with Dasia "́" U+0301 Combining Acute Accent

Encodings

HTML Decimal Encoding	ὕ
HTML Hex Encoding	ὕ
UTF-8 Encoding	0xE1 0xBD 0x95
UTF-16 Encoding	0x1F55
UTF-32 Encoding	0x00001F55
C/C++/Java Escape	\u1f55

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	"Ὕ" U+1F5D Greek Capital Letter Upsilon with Dasia and Oxia
Simple Titlecase Code Point	"Ὕ" U+1F5D Greek Capital Letter Upsilon with Dasia and Oxia
Uppercase Code Point	"Ὕ" U+1F5D Greek Capital Letter Upsilon with Dasia and Oxia
Titlecase Code Point	"Ὕ" U+1F5D Greek Capital Letter Upsilon with Dasia and Oxia
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
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	Lower