Mater lectionis in the context of "Aramaic alphabet"

Hebrew spelling is the way words are spelled in the Hebrew language. The Hebrew alphabet contains 22 letters, all of which are primarily consonants. This is because the Hebrew script is an abjad, that is, its letters indicate consonants, not vowels or syllables. An early system to overcome this, still used today, is matres lectionis, where four of these letters, alef, he, vav and yud also serve as vowel letters. Later, a system of vowel points to indicate vowels (Hebrew diacritics), called niqqud, was developed.

In Hebrew orthography the rafe or raphe (Hebrew: רָפֶה, pronounced [ʁaˈfe], meaning "weak, limp") is a diacritic (⟨◌ֿ‎⟩), a subtle horizontal overbar placed above certain letters to indicate that they are to be pronounced as fricatives.

It originated with the Tiberian Masoretes as part of the extended system of niqqud (vowel points), and has the opposite meaning of dagesh qal, showing that one of the letters בגדכפת‎ is to be pronounced as a fricative and not as a plosive, or (sometimes) that a consonant is single and not double; or, as the opposite to a mappiq, to show that the letters ה‎ or א‎ are silent (mater lectionis).

The ancient Aramaic alphabet was used to write the Aramaic languages spoken by ancient Aramean pre-Christian peoples 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 "Ktav Ashuri", 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 letters in the Aramaic alphabet all represent consonants, some of which are also used as matres lectionis to indicate long vowels. Writing systems, like the Aramaic, that indicate consonants but do not indicate most vowels other than by means of matres lectionis or added diacritical signs, have been called abjads by Peter T. Daniels to distinguish them from alphabets such as the Greek alphabet, that represent vowels more systematically. The term was coined to avoid the notion that a writing system that represents sounds must be either a syllabary or an alphabet, which would imply that a system like Aramaic must be either a syllabary, as argued by Ignace Gelb, or an incomplete or deficient alphabet, as most other writers had said before Daniels. Daniels put forward that this is a different type of writing system, intermediate between syllabaries and 'full' alphabets.