From: Peter T. Daniels
Message: 3306
Date: 2004-08-01
>When they get vowel points they cease to abjads definitely, and when
> Daniels:
>
> abjad a type of writing system that denotes only consonants
>
> The Unicode Standard:
>
> Abjad. A consonant writing system. The main letters are all
> consonants (or long vowels) with other vowels either left out
> entirely or indicated with secondary marking of the consonants. The
> best-known example is the Arabic writing system, and the term "abjad"
> is derived from the first four letters of the traditional order of
> the Arabic script.
>
> Daniels commented:
>
> >The differences, for the one among you who cannot see them: absense of
> >"only"; presence of "(or long vowels)"; mention of secondary markings;
> >bad example. The only pure example is Phoenician.
>
> So, given this, one might propose the following revision:
>
> Abjad. A writing system in which only consonants are indicated. A
> well-known example is the Arabic writing system, though it is not a
> "pure" abjad because consonant letters like /w/ and /y/ are used to
> mark long vowels /o/ or /u/ or /i/. In some abjads, vowels can also
> be indicated by the use of secondary marks on the consonants. The
> term "abjad" is derived from the first four letters of the
> traditional order of the Arabic script.
>
> I believe that this is accurate. Comment is invited. And yes, I am
> leaving Abugida for the last.