from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An iota representing a sound that was, in early Greek, pronounced after a long vowel, and persisted in writing long after it dropped out of speech, being written under the long vowel in lowercase.
from the GNU version of the Collaborative International Dictionary of English
- n. iota written beneath a preceding vowel, as a,, h,, w,, -- done when iota is silent.
Sorry, no etymologies found.
The writing is in elegant continuous uncials (capitals), in three columns, without initial letters or iota subscript or adscript.