An abjad, also abgad, is a writing system in which only consonants are represented, leaving the vowel sounds to be inferred by the reader. This contrasts with alphabets, which provide graphemes for both consonants and vowels. The term was introduced in 1990 by Peter T. Daniels. Other terms for the same concept include partial phonemic script, segmentally linear defective phonographic script, consonantary, consonant writing, and consonantal alphabet.
The ancient Aramaic alphabet was used to write the Aramaic languages spoken by ancient Aramean pre-Christian tribes throughout the Fertile Crescent. It was also adopted by other peoples as their own alphabet when empires and their subjects underwent linguistic Aramaization during a language shift for governing purposes — a precursor to Arabization centuries later — including among the Assyrians and Babylonians who permanently replaced their Akkadian language and its cuneiform script with Aramaic and its script, and among Jews, but not Samaritans, who adopted the Aramaic language as their vernacular and started using the Aramaic alphabet, which they call "Square Script", even for writing Hebrew, displacing the former Paleo-Hebrew alphabet. The modern Hebrew alphabet derives from the Aramaic alphabet, in contrast to the modern Samaritan alphabet, which derives from Paleo-Hebrew.
The Arabic alphabet, or the Arabic abjad, is the Arabic script as specifically codified for writing the Arabic language. It is written from right-to-left in a cursive style, and includes 28 letters, of which most have contextual letterforms. Unlike the Latin alphabet, the script has no concept of letter case. The Arabic alphabet is considered an abjad, with only consonants required to be written; due to its optional use of diacritics to notate vowels, it is considered an impure abjad.
The Hebrew alphabet, known variously by scholars as the Ktav Ashuri, Jewish script, square script and block script, is an abjad script used in the writing of the Hebrew language and other Jewish languages, most notably Yiddish, Ladino, Judeo-Arabic, and Judeo-Persian. In modern Hebrew, vowels are increasingly introduced. It is also used informally in Israel to write Levantine Arabic, especially among Druze. It is an offshoot of the Imperial Aramaic alphabet, which flourished during the Achaemenid Empire and which itself derives from the Phoenician alphabet.
A mater lectionis is any consonant that is used to indicate a vowel, primarily in the writing of Semitic languages such as Arabic, Hebrew and Syriac. The letters that do this in Hebrew are aleph א, he ה, waw ו and yod י, with the latter two in particular being more often vowels than they are consonants. In Arabic, the matres lectionis are ʾalif ا, wāw و and yāʾ ي.
The Phoenician alphabet is an abjad used across the Mediterranean civilization of Phoenicia for most of the 1st millennium BC. It was one of the first alphabets, and attested in Canaanite and Aramaic inscriptions found across the Mediterranean region. In the history of writing systems, the Phoenician script also marked the first to have a fixed writing direction—while previous systems were multi-directional, Phoenician was written horizontally, from right to left. It developed directly from the Proto-Sinaitic script used during the Late Bronze Age, which was derived in turn from Egyptian hieroglyphs.
Jawi is a writing system used for writing several languages of Southeast Asia, such as Acehnese, Magindanawn, Malay, Mëranaw, Minangkabau, Tausūg, and Ternate. Jawi is based on the Arabic script, consisting of all 31 original Arabic letters, six letters constructed to fit phonemes native to Malay, and one additional phoneme used in foreign loanwords, but not found in Classical Arabic, which are ca, nga, pa, ga, va, and nya.
The Syriac alphabet is a writing system primarily used to write the Syriac language since the 1st century AD. It is one of the Semitic abjads descending from the Aramaic alphabet through the Palmyrene alphabet, and shares similarities with the Phoenician, Hebrew, Arabic and Sogdian, the precursor and a direct ancestor of the traditional Mongolian scripts.
Classical Arabic or Quranic Arabic is the standardized literary form of Arabic used from the 7th century and throughout the Middle Ages, most notably in Umayyad and Abbasid literary texts such as poetry, elevated prose and oratory, and is also the liturgical language of Islam. Classical Arabic is, furthermore, the register of the Arabic language on which Modern Standard Arabic is based.
The Nabataean script is an abjad that was used to write Nabataean Aramaic and Nabataean Arabic from the second century BC onwards. Important inscriptions are found in Petra, the Sinai Peninsula, and other archaeological sites including Abdah and Mada'in Saleh in Saudi Arabia.
The Ancient South Arabian script branched from the Proto-Sinaitic script in about the late 2nd millennium BCE. It was used for writing the Old South Arabian languages Sabaic, Qatabanic, Hadramautic, Minaean Hasaitic, and Geʽez in Dʿmt. The earliest instances of the Ancient South Arabian script are painted pottery sherds from Raybun in Hadhramaut in Yemen, which are dated to the late 2nd millennium BCE. There are no letters for vowels, though some can be indicated via matres lectionis.
Aleph is the first letter of the Semitic abjads, including Arabic ʾalifا, Aramaic ʾālap 𐡀, Hebrew ʾālefא, North Arabian 𐪑, Phoenician ʾālep 𐤀, Syriac ʾālap̄ ܐ. It also appears as South Arabian 𐩱 and Ge'ez ʾälef አ.
The romanization of Arabic is the systematic rendering of written and spoken Arabic in the Latin script. Romanized Arabic is used for various purposes, among them transcription of names and titles, cataloging Arabic language works, language education when used instead of or alongside the Arabic script, and representation of the language in scientific publications by linguists. These formal systems, which often make use of diacritics and non-standard Latin characters and are used in academic settings or for the benefit of non-speakers, contrast with informal means of written communication used by speakers such as the Latin-based Arabic chat alphabet.
In graphemics, a defective script is a writing system that does not represent all the phonemic distinctions of a language. This means that the concept is always relative to a given language. Taking the Latin alphabet used in Italian orthography as an example, the Italian language has seven vowels, but the alphabet has only five vowel letters to represent them; in general, the difference between the phonemes close and open is simply ignored, though stress marks, if used, may distinguish them. Among the Italian consonants, both and are written ⟨s⟩, and both and are written ⟨z⟩; stress and hiatus are also not reliably distinguished.
The Ottoman Turkish alphabet is a version of the Perso-Arabic script used to write Ottoman Turkish until 1928, when it was replaced by the Latin-based modern Turkish alphabet.
The Arabic script is the writing system used for Arabic and several other languages of Asia and Africa. It is the second-most widely used alphabetic writing system in the world, the second-most widely used writing system in the world by number of countries using it, and the third-most by number of users.
The Urdu alphabet is the right-to-left alphabet used for writing Urdu. It is a modification of the Persian alphabet, which itself is derived from the Arabic script. It has co-official status in the republics of Pakistan, India and South Africa. The Urdu alphabet has up to 39 or 40 distinct letters with no distinct letter cases and is typically written in the calligraphic Nastaʿlīq script, whereas Arabic is more commonly written in the Naskh style.
Wadaad's writing, also known as Wadaad'sArabic, is the traditional Somali adaptation of written Arabic as well as the Arabic script as historically used to transcribe the Somali language. Originally, it referred to a non-grammatical Arabic featuring some words from the Somali language, with the proportion of Somali vocabulary varying depending on the context. The Somalis were among the first people in Africa to embrace Islam. Alongside standard Arabic, Wadaad's writing was used by Somali religious men (Wadaado) to record xeer petitions and to write qasidas. It was also used by merchants for business purposes and letter writing.
The Armenian alphabet or, more broadly, the Armenian script, is an alphabetic writing system developed for Armenian and occasionally used to write other languages. It was developed around 405 CE by Mesrop Mashtots, an Armenian linguist and ecclesiastical leader. The script originally had 36 letters. Eventually, two more were adopted in the 13th century. In reformed Armenian orthography (1920s), the ligature ևev is also treated as a letter, bringing the total number of letters to 39.
Old Arabic is the name for any Arabic language or dialect continuum before Islam. Various forms of Old Arabic are attested in scripts like Safaitic, Hismaic, Nabatean, and even Greek.
