Where does “betonář” come from?

betonář (Czech) comes from Czech ar, from French are, from Latin ārea, from Proto-Italic āzeā, from Proto-Indo-European h₂eHs-e-yeh₂, from Proto-Indo-European h₂eHs- — to be/become dry; to burn, to glow; hearth.

betonář (Czech): concreter

Definitions

concreter

Ancestry of “betonář”, step by step

betonář traces back through two separate lines of ancestry.

via Czech ar

Step	Language	Word	Meaning
1	Czech	ar	are
2	French	are	an are
3	Latin	ārea	a piece of level ground, a vacant place (esp. in the town)
4	Proto-Italic	āzeā	—
5	Proto-Indo-European	h₂eHs-e-yeh₂	—
6	Proto-Indo-European	h₂eHs-	to be/become dry; to burn, to glow; hearth

via Czech beton

Step	Language	Word	Meaning
1	Czech	beton	concrete; an alcoholic cocktail, initalism of...
2	French	béton	concrete; to drop
3	Latin	bitūmen	mineral pitch, bitumen
4	Latin	-men	forms neuter nouns of the third declension
5	Proto-Italic	*-mn̥	—

Every word from Proto-Indo-European h₂eHs- →Every word from Proto-Indo-European h₂eHs-e-yeh₂ →Every word from Proto-Italic āzeā →