a·be·ce·dar·i·an| ˌābēsēˈderēən | adjective 1 arranged alphabetically: in abecedarian sequence. 2 rudimentary; elementary: abecedarian technology.
Alphabet. As notes score music, so the alphabet scores speech. Letters are notes for the music of language, and this explains two archaic practices that once mystified me. Until the Middle Ages scribes didnotseparatewords. (Punctuation had yet to be invented.) And originally readers read out loud, never silently. I now see how reading words is like reading music.