U+03D4 "ϔ" Greek Upsilon with Diaeresis and Hook Symbol Unicode Character

Unicode Version 17.0

ϔ

U+03D4 "ϔ" Greek Upsilon with Diaeresis and Hook Symbol is a specialized typographic variant of the Greek letter upsilon, combining a diaeresis (two dots) above the letter with a hook or smooth breathing mark, typically used in polytonic Greek orthography to indicate a specific pronunciation or grammatical function. It is distinct from other upsilon forms, such as the basic upsilon (Υ υ) or the upsilon with diaeresis alone (Ϋ ϋ), and was historically employed in scholarly or liturgical texts to represent a vowel that begins a word or syllable with a rough or smooth breathing, though it is rarely used in modern Greek or standard digital typography. This character, defined in the Unicode Standard as a precomposed letter within the Greek and Coptic block, serves as a historical and linguistic artifact, preserved for compatibility with legacy encoding systems and for academic transcription of ancient or medieval Greek manuscripts.

General Properties

Code Point U+03D4
Version Added 1.1
Name Greek Upsilon with Diaeresis and Hook Symbol
Unicode 1.0 Name Greek Capital Letter Upsilon Hook Diaeresis
Block Greek and Coptic
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Canonical
Decomposition Mapping "ϒ" U+03D2 Greek Upsilon with Hook Symbol
"̈" U+0308 Combining Diaeresis

Encodings

HTML Decimal Encoding ϔ
HTML Hex Encoding ϔ
UTF-8 Encoding 0xCF 0x94
UTF-16 Encoding 0x03D4
UTF-32 Encoding 0x000003D4
C/C++/Java Escape \u03d4

Unicode Properties

NFC Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Uppercase Yes
Cased Yes
Changes When NFKC Casefolded Yes
NFKC Casefold "ϋ" U+03CB Greek Small Letter Upsilon with Dialytika
NFKC Simple Casefold "ϋ" U+03CB Greek Small Letter Upsilon with Dialytika
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