Home U+0300 to U+036F Combining Diacritical Marks
Glyph for U+0345
Source: Noto Sans

U+0345 COMBINING GREEK YPOGEGRAMMENI

U+0345 was added to Unicode in version 1.1 (1993). It belongs to the block U+0300 to U+036F Combining Diacritical Marks in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Nonspacing Mark and inherits its script property from the preceding character. It is also used in the script Greek. It is related to its uppercase variant Glyph for U+0399 Greek Capital Letter Iota and its titlecase variant Glyph for U+0399 Greek Capital Letter Iota. The character is also known as greek non-spacing iota below (1.0) and iota subscript.

The glyph is not a composition. It has a Ambiguous East Asian Width. In bidirectional context it acts as Nonspacing Mark and is not mirrored. The glyph can, under circumstances, be confused with 1 other glyphs. In text U+0345 behaves as Combining Mark regarding line breaks. It has type Extend for sentence and Extend for word breaks. The Grapheme Cluster Break is Extend.

The Wikipedia has the following information about this codepoint:

The iota subscript is a diacritic mark in the Greek alphabet shaped like a small vertical stroke or miniature iota ⟨ι⟩ placed below the letter. It can occur with the vowel letters eta ⟨η⟩, omega ⟨ω⟩, and alpha ⟨α⟩. It represents the former presence of an [i] offglide after the vowel, forming a so‐called "long diphthong". Such diphthongs (i.e., ηι, ωι, ᾱι)—phonologically distinct from the corresponding normal or "short" diphthongs (i.e., ει, οι, ᾰι )—were a feature of ancient Greek in the pre-classical and classical eras.

The offglide was gradually lost in pronunciation, a process that started already during the classical period and continued during the Hellenistic period, with the result that, from approximately the 1st century BC onwards, the former long diphthongs were no longer distinguished in pronunciation from the simple long vowels (long monophthongs) η, ω, ᾱ respectively.

During the Roman and Byzantine eras, the iota, now mute, was sometimes still written as a normal letter but was often simply left out. The iota subscript was invented by Byzantine philologists in the 12th century AD as an editorial symbol marking the places where such spelling variation occurred.

The alternative practice, of writing the mute iota not under, but next to the preceding vowel, is known as iota adscript. In mixed-case environments, it is represented either as a slightly reduced iota (smaller than regular lowercase iota), or as a full-sized lowercase iota. In the latter case, it can be recognized as iota adscript by the fact that it never carries any diacritics (breathing marks, accents).

In uppercase-only environments, it is represented again either as slightly reduced iota (smaller than regular lowercase iota), or as a full-sized uppercase Iota. In digital environments, and for linguistic reasons also in all other environments, the representation as a slightly reduced iota is recommended. There are Unicode codepoints for all Greek vowels with iota adscript (for example, U+1FBC ᾼ GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI), allowing for easy implementation of that recommendation in digital environments.

Representations

System Representation
837
UTF-8 CD 85
UTF-16 03 45
UTF-32 00 00 03 45
URL-Quoted %CD%85
HTML-Escape ͅ
Wrong windows-1252 Mojibake ◌ͅ
alias greek non-spacing iota below (1.0)
alias iota subscript
AGL: Latin-5 uni0345
Adobe Glyph List ypogegrammenigreekcmb

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age 1.1 (1993)
Unicode Name COMBINING GREEK YPOGEGRAMMENI
Unicode 1 Name GREEK NON-SPACING IOTA BELOW
Block Combining Diacritical Marks
General Category Nonspacing Mark
Script Inherited
Bidirectional Category Nonspacing Mark
Combining Class Iota Subscript
Decomposition Type None
Decomposition Mapping Glyph for U+0345 Combining Greek Ypogegrammeni
Lowercase
Simple Lowercase Mapping Glyph for U+0345 Combining Greek Ypogegrammeni
Lowercase Mapping Glyph for U+0345 Combining Greek Ypogegrammeni
Uppercase
Simple Uppercase Mapping Glyph for U+0399 Greek Capital Letter Iota
Uppercase Mapping Glyph for U+0399 Greek Capital Letter Iota
Simple Titlecase Mapping Glyph for U+0399 Greek Capital Letter Iota
Titlecase Mapping Glyph for U+0399 Greek Capital Letter Iota
Case Folding Glyph for U+03B9 Greek Small Letter Iota
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Cased
Full Composition Exclusion
Default Ignorable Code Point
Dash
Deprecated
Diacritic
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Emoji
Extender
Extended Pictographic
FC NFKC Closure Glyph for U+0345 Combining Greek Ypogegrammeni
Grapheme Cluster Break Extend
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hyphen
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
Ideographic
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Maybe
NFD Quick Check Yes
NFKC Casefold Glyph for U+03B9 Greek Small Letter Iota
NFKC Quick Check Maybe
NFKD Quick Check Yes
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Radical
Sentence Break Extend
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Extend
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Paired Bracket Glyph for U+0345 Combining Greek Ypogegrammeni
Bidi Paired Bracket Type None
East Asian Width Ambiguous
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Transparent
Line Break Combining Mark
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+03B9 Greek Small Letter Iota
Script Extension Greek
Vertical Orientation R