H3rg^-

>
> *H3reg^- is full grade, its zero-grade is *H3rg^-. You apparently
> operate on the assumption that a presumed preverb "*H3o-" will take
> to ablauting in its position before the verb. That is not a normal
> behaviour of preverbs. The evasive "preverb o-" is not known outside
> of Greek, except for the isolated *ó-sd-o-s 'branch'. The laryngeal
> in *H3reg^- is directly proved by Hittite harganau- 'finger' and
> Avest. &r&zu- adj. 'erect' or m. 'finger', reflecting *H3r.g^-ú- and
> in part a factitive verb *H3r.g^-n-u- 'make erect, stretch out'.
>

I think I was told that Latin 'origo:' is from 'oriri', but might the
o- not be a H3- that survived when it shouldn't? As to the -i-, cf.
the unwarranted -i- in Germanic *raik- "reach"

Torsten