D, or d, is the fourth

letter Letter, letters, or literature may refer to: Characters typeface * Letter (alphabet), a character representing one or more of the sounds used in speech or none in the case of a silent letter; any of the symbols of an alphabet * Letterform, the g ...

of the

Latin alphabet The Latin alphabet, also known as the Roman alphabet, is the collection of letters originally used by the Ancient Rome, ancient Romans to write the Latin language. Largely unaltered except several letters splitting—i.e. from , and from � ...

, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''dee'' (pronounced ), plural ''dees''.

History

The Semitic letter Dāleth may have developed from the

logogram In a written language, a logogram (from Ancient Greek 'word', and 'that which is drawn or written'), also logograph or lexigraph, is a written character that represents a semantic component of a language, such as a word or morpheme. Chine ...

for a fish or a door. There are many different

Egyptian hieroglyph Ancient Egyptian hieroglyphs ( ) were the formal writing system used in Ancient Egypt for writing the Egyptian language. Hieroglyphs combined ideographic, logographic, syllabic and alphabetic elements, with more than 1,000 distinct characters. ...

s that might have inspired this. In Semitic,

Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...

and

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

, the letter represented ; in the

Etruscan alphabet The Etruscan alphabet was used by the Etruscans, an ancient civilization of central and northern Italy, to write Etruscan language, their language, from about 700 BC to sometime around 100 AD. The Etruscan alphabet derives from the Euboean alpha ...

the letter was archaic but still retained. The equivalent

Greek letter The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. It was derived from the earlier Phoenician alphabet, and is the earliest known alphabetic script to systematically write vowels as wel ...

is delta, Δ. The

minuscule Letter case is the distinction between the letters that are in larger uppercase or capitals (more formally ''majuscule'') and smaller lowercase (more formally '' minuscule'') in the written representation of certain languages. The writing system ...

(lower-case) form of 'd' consists of a lower-story left

bowl A bowl is a typically round dish or container generally used for preparing, serving, storing, or consuming food. The interior of a bowl is characteristically shaped like a spherical cap, with the edges and the bottom, forming a seamless curve ...

and a stem ascender. It most likely developed by gradual variations on the

majuscule Letter case is the distinction between the letters that are in larger uppercase or capitals (more formally '' majuscule'') and smaller lowercase (more formally '' minuscule'') in the written representation of certain languages. The writing syste ...

(capital) form 'D', and is now composed as a stem with a full

lobe Lobe may refer to: People with the name * Lobe (surname) Science and healthcare * Lobe (anatomy) * Lobe, a large-scale structure of a radio galaxy * Glacial lobe, a lobe-shaped glacier * Lobation, a characteristic of the nucleus of certain biolo ...

to the right. In handwriting, it was common to start the arc to the left of the vertical stroke, resulting in a

serif In typography, a serif () is a small line or stroke regularly attached to the end of a larger stroke in a letter or symbol within a particular font or family of fonts. A typeface or "font family" making use of serifs is called a serif typeface ( ...

at the top of the arc. This serif was extended while the rest of the letter was reduced, resulting in an angled stroke and loop. The angled stroke slowly developed into a vertical stroke.

Use in writing systems

English

English English usually refers to: * English language * English people English may also refer to: Culture, language and peoples * ''English'', an adjective for something of, from, or related to England * ''English'', an Amish ter ...

, generally represents the

voiced alveolar plosive The voiced alveolar, dental and postalveolar plosives (or stops) are types of consonantal sounds used in many spoken languages. The symbol in the International Phonetic Alphabet that represents voiced dental, alveolar, and postalveolar plosi ...

. The letter is the tenth most frequently used in the English language.

Other languages

In most languages that use the Latin alphabet, generally represents the voiced alveolar or

voiced dental plosive The voiced alveolar, dental and postalveolar plosives (or stops) are types of consonantal sounds used in many spoken languages. The symbol in the International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic s ...

. In the

Vietnamese alphabet The Vietnamese alphabet (, ) is the modern writing script for the Vietnamese language. It uses the Latin script based on Romance languages like French language, French, originally developed by Francisco de Pina (1585–1625), a missionary from P ...

, it represents the sound in northern dialects or in southern dialects. In Fijian, it represents a

prenasalized Prenasalized consonants are phonetic sequences of a nasal and an obstruent (or occasionally a non-nasal sonorant) that behave phonologically like single consonants. The primary reason for considering them to be single consonants, rather than clus ...

stop . In some languages where

voice The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound produ ...

less

unaspirated In phonetics, aspiration is a strong burst of breath that accompanies either the release or, in the case of preaspiration, the closure of some obstruents. In English, aspirated consonants are allophones in complementary distribution with thei ...

stops contrast with voiceless aspirated stops, represents an unaspirated , while represents an aspirated . Examples of such languages include Icelandic,

Scottish Gaelic Scottish Gaelic (, ; Endonym and exonym, endonym: ), also known as Scots Gaelic or simply Gaelic, is a Celtic language native to the Gaels of Scotland. As a member of the Goidelic language, Goidelic branch of Celtic, Scottish Gaelic, alongs ...

Navajo The Navajo or Diné are an Indigenous people of the Southwestern United States. Their traditional language is Diné bizaad, a Southern Athabascan language. The states with the largest Diné populations are Arizona (140,263) and New Mexico (1 ...

and the

pinyin Hanyu Pinyin, or simply pinyin, officially the Chinese Phonetic Alphabet, is the most common romanization system for Standard Chinese. ''Hanyu'' () literally means 'Han Chinese, Han language'—that is, the Chinese language—while ''pinyin' ...

transliteration of

Mandarin Mandarin or The Mandarin may refer to: Language * Mandarin Chinese, branch of Chinese originally spoken in northern parts of the country ** Standard Chinese or Modern Standard Mandarin, the official language of China ** Taiwanese Mandarin, Stand ...

Other systems

In the

International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standard written representation ...

, represents the

Other uses

* In the

hexadecimal Hexadecimal (also known as base-16 or simply hex) is a Numeral system#Positional systems in detail, positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbo ...

(base 16) numbering system, D is a number that corresponds to the number 13 in

decimal The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (''decimal fractions'') of th ...

(base 10) counting. * The

Roman numeral Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ea ...

D represents the number

500 500 may refer to: * 500 (number) * 500 BC * AD 500 Buildings and places * 500 Boylston Street in Boston * 500 Brickell in Miami * 500 Capitol Mall in Sacramento * 500 Fifth Avenue * 500 Renaissance Center, one of seven buildings in the GM ...

. *

Unit prefix A unit prefix is a specifier or mnemonic that is added to the beginning of a unit of measurement to indicate multiples or fractions of the units. Units of various order of magnitude, sizes are commonly formed by the use of such prefixes. The Metric ...

d, meaning one tenth. * D is the grade below C but above E/F in the school grading system. * D is the

international vehicle registration code The country in which a motor vehicle's vehicle registration plate was issued may be indicated by an international vehicle registration code, also called Vehicle Registration Identification code or VRI code, formerly known as an International ...

for

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

(also .de as its

top-level domain A top-level domain (TLD) is one of the domain name, domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the DNS root zone, root zone of the nam ...

). * In

Cantonese Cantonese is the traditional prestige variety of Yue Chinese, a Sinitic language belonging to the Sino-Tibetan language family. It originated in the city of Guangzhou (formerly known as Canton) and its surrounding Pearl River Delta. While th ...

: Because the lack of Unicode CJK support in early computer systems, many Hong Kongers and Singaporeans used the capitalized D to represent (). * In the Gregory-Aland system for cataloging Biblical manuscripts, D can refer to documents in the

Western text-type In textual criticism of the New Testament, the Western text-type is one of the main text types. It is the predominant form of the New Testament text witnessed in the Old Latin and Syriac translations from the Greek, and also in quotations from ...

tradition, either

Codex Bezae The Codex Bezae Cantabrigiensis is a bi-lingual Greek and Latin manuscript of the New Testament written in an uncial hand on parchment. It is designated by the siglum D or 05 in the Gregory-Aland numbering of New Testament manuscripts, and � ...

Codex Claromontanus Codex Claromontanus, symbolized by Dp, D2 or 06 (in the Biblical manuscript#Gregory-Aland, Gregory-Aland numbering), δ 1026 (Biblical manuscript#Von Soden, von Soden), is a Greek-Latin diglot uncial manuscript of the New Testament, written in an ...

. * d. is the standard abbreviation for the

Penny (British pre-decimal coin) The United Kingdom, British £sd, pre-decimal penny was a denomination of Coins of the United Kingdom, sterling coinage worth of one Pound sterling, pound or of one Shilling (British coin), shilling. Its symbol was ''d'', from the Roman denari ...

(from )

Related characters

Descendants and related characters in the Latin alphabet

* Ɖ ɖ :

African D African D (Ɖ, ɖ) is a Latin letter representing the voiced retroflex plosive . It is a part of the African reference alphabet. It is mainly used by African languages such as Ewe, Fon, Aja, and Bassa. The African D should not be confused wi ...

* Ð ð : Latin letter Eth * D with

diacritic A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacrit ...

s: Đ đ Ꟈ ꟈ Ɗ ɗ Ḋ ḋ Ḍ ḍ Ḑ ḑ Ḓ ḓ Ď ď Ḏ ḏ * Phonetic symbols related to D: ** Symbols related to D used in the

IPA IPA commonly refers to: * International Phonetic Alphabet, a system of phonetic notation ** International Phonetic Association, the organization behind the alphabet * India pale ale, a style of beer * Isopropyl alcohol, a chemical compound IPA ...

: ** Symbols related to D used in the

Uralic Phonetic Alphabet Finno-Ugric transcription (FUT) or the Uralic Phonetic Alphabet (UPA) is a phonetic transcription or notational system used predominantly for the transcription and reconstruction of Uralic languages. It was first published in 1901 by Eemil Nesto ...

: **

Superscript IPA letters A subscript or superscript is a character (such as a number or letter) that is set slightly below or above the normal line of type, respectively. It is usually smaller than the rest of the text. Subscripts appear at or below the baseline, wh ...

: 𐞋 𐞌 𐞍 ** Other phonetic symbols related to D: ȡ

ᵭ The voiced alveolar, dental and postalveolar plosives (or stops) are types of consonantal sounds used in many spoken languages. The symbol in the International Phonetic Alphabet that represents voiced dental, alveolar, and postalveolar plosiv ...

ᶁ D with hook and tail, ᶑ * Ƌ ƌ : Ƌ, D with topbar * 𝼥: D with mid-height left hook – Used by the British and Foreign Bible Society in the early 20th century for romanization of the Malayalam language. * Ꝺ ꝺ: Insular script, Insular D is used in various phonetic contexts

Ancestors and siblings in other alphabets

* 𐤃: Phoenician alphabet, Semitic letter Dalet, from which the following symbols originally derive: ** Δ δ: Greek alphabet, Greek letter Delta (letter), Delta, from which the following symbols originally derive: *** : Coptic alphabet, Coptic letter Delta *** Д д: Cyrillic letter De (Cyrillic), De *** 𐌃: Old Italic script, Old Italic D, the ancestor of modern Latin D **** : Runes, Runic letter dagaz, which is possibly a descendant of Old Italic D **** : Runic letter thurisaz, another possible descendant of Old Italic D *** : Gothic alphabet, Gothic letter daaz, which derives from Greek Delta

Derived signs, symbols and abbreviations

* ₫: Vietnamese đồng, Đồng sign * ⅆ: Unicode symbol for d used as derivative symbol * ∂: ∂, the partial derivative symbol,

\partial

Other representations

Computing

The Latin letters and have Unicode encodings and . These are the same code points as those used in ASCII and ISO 8859. There are also precomposed character encodings for and with diacritics, for most of those listed #Related characters, above; the remainder are produced using combining diacritics. Variant forms of the letter have unique code points for specialist use: the Mathematical Alphanumeric Symbols, alphanumeric symbols set in mathematics and science, plosive sounds in linguistics and halfwidth and fullwidth forms for legacy CJK characters, CJK font compatibility.

Other

In British Sign Language (BSL), the letter 'd' is indicated by signing with the right hand held with the index and thumb extended and slightly curved, and the tip of the thumb and finger held against the extended index of the left hand.

References

External links

* * {{Latin script, D} ISO basic Latin letters