I've been playing around with octatonic and enneatonic (sp?) scales of 8 and 9 discrete notes (not including the octave, of course). For the modes, this leaves one or two missing terms for the 8th and 9th modes. But for all my Googling, I can't divine the origin of the Greek terms for the first seven, from Ionic to Locrian. Does anyone know? I'm picturing columns. This may be more of a language question, but I figured I'd start here.
Also, "enneatic" the correct term for a nine-note scale? I'm going by this Wikipedia page on ordinal numbers. I believe 10 is "decatonic," 11 is "hendecatonic," and 12 (the Chromatic scale) is "dodecatonic."