U+03B9 "ι" Greek Small Letter Iota Unicode Character

U+03B9 "ι" Greek Small Letter Iota is the ninth letter of the Greek alphabet and represents the vowel sound /i/ in both Ancient and Modern Greek, where it serves as a common grammatical element and often appears in diphthongs. In the history of writing, the iota is also famously associated with the term "jot" derived from its minuscule form, and it features as a subscript in certain Ancient Greek texts to indicate a long vowel. Within Unicode, it is encoded in the Greek and Coptic block and is visually distinct from the Latin letter "i" due to its lack of a dot above, making it important for accurate digital representation of Greek script in linguistics, mathematics, and theology.

General Properties

Code Point	U+03B9
Version Added	1.1
Name	Greek Small Letter Iota
Block	Greek and Coptic
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ι
HTML Hex Encoding	ι
UTF-8 Encoding	0xCE 0xB9
UTF-16 Encoding	0x03B9
UTF-32 Encoding	0x000003B9
C/C++/Java Escape	\u03b9

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
East Asian Width	Ambiguous
Lowercase	Yes
Simple Uppercase Code Point	"Ι" U+0399 Greek Capital Letter Iota
Simple Titlecase Code Point	"Ι" U+0399 Greek Capital Letter Iota
Uppercase Code Point	"Ι" U+0399 Greek Capital Letter Iota
Titlecase Code Point	"Ι" U+0399 Greek Capital Letter Iota
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