The Middle Persian (MP) verb gumēxtan , gumēz- [gwmyhtn', gymyc-], despite its Indo-Iranian and Indo-European origins, does not offer attestations in Avestan Old Persian. This is a very peculiar fact, because particular nominal derivative of this verbal stem, gumēzišn [gwmyck'], became one the most sensible technical terms adopted framework Mazdean cosmology theology. We can briefly recall that...