An abugida – sometimes also called alphasyllabary, neosyllabary, or pseudo-alphabet – is a segmental writing system in which consonant–vowel sequences are written as units; each unit is based on a consonant letter, and vowel notation is secondary, similar to a diacritical mark. This contrasts with a full alphabet, in which vowels have status equal to consonants, and with an abjad, in which vowel marking is absent, partial, or optional – in less formal contexts, all three types of the script may be termed "alphabets". The terms also contrast them with a syllabary, in which a single symbol denotes the combination of one consonant and one vowel.
A 19th-century manuscript in the Devanagari script
The Ge'ez script, an abugida of Eritrea and Ethiopia
Geʽez is an ancient South Semitic language. The language originates from what is now northern Ethiopia and Eritrea.
Ezana stone, written in Ge'ez explaining his conquests and accomplishments
Genesis 29.11–16 in Geʽez
Example of Geʽez taken from a 15th-century Ethiopian Coptic prayer book
The Ezana Stone, engraved from AD 330 to 356, is written in ancient Ge'ez, Sabaean and Greek.