from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. In Proto-Indo-European linguistics, a term used to describe an ablaut form of a Proto-Indo-European root, characterised by the presence of the */o/ vowel phoneme in place of */e/.
Sorry, no etymologies found.
Now the question left is why the bizarre replacement of o-grade 3ps with a lengthened e-grade form with an entirely different ending, seemingly on the side of increasing system irregularity?
So the 3sg hi- preterite ending has an expected *o-grade.
Rob: Then there is the strange vowel/accent pattern, with accent on the o-grade vowel.
Then there is the strange vowel/accent pattern, with accent on the o-grade vowel.
I will suggest briefly that perhaps there was originally a simple two-fold distinction between 'non-completed' actions in e-grade and 'completed' actions in a-grade later o-grade due to Vowel Shift at the end of the Late IE period.
Notice that in my system, all verbs began to ablaut because of vowel harmony and eventually the a-grade later becoming o-grade would become productive as a signal of stativeness.