Where does “podvýraz” come from?

podvýraz (Czech) comes from Czech výraz, from Czech vyrazit, from Czech vý-, from Old Czech vy-, from Proto-Slavic vy-, from Proto-Balto-Slavic ū́, from Proto-Indo-European úd — out, outward.

podvýraz (Czech): subexpression

Definitions

subexpression

Ancestry of “podvýraz”, step by step

Step	Language	Word	Meaning
1	Czech	výraz	expression; expression, term
2	Czech	vyrazit	to set out, to depart
3	Czech	vý-	A noun forming prefix, often indicating the...
4	Old Czech	vy-	derives verbs of various meanings
5	Proto-Slavic	vy-	out
6	Proto-Balto-Slavic	ū́	—
7	Proto-Indo-European	úd	out, outward

Every word from Proto-Indo-European úd →Every word from Czech vý- →Every word from Proto-Balto-Slavic ū́ →