Where does “zuurgraad” come from?

zuurgraad (Dutch) comes from Dutch zuur, from Middle Dutch suur, from Old Dutch sūr, from Proto-West Germanic sūr, from Proto-Germanic sūraz, from Proto-Indo-European suHrós — sour, salty, bitter.

zuurgraad (Dutch): acidity

Definitions

acidity

Ancestry of “zuurgraad”, step by step

zuurgraad traces back through two separate lines of ancestry.

via Dutch zuur

Step	Language	Word	Meaning
1	Dutch	zuur	sour; acidic; acid
2	Middle Dutch	suur	—
3	Old Dutch	sūr	sour
4	Proto-West Germanic	sūr	sour, acidic
5	Proto-Germanic	sūraz	sour, acidic
6	Proto-Indo-European	suHrós	sour, salty, bitter

via Dutch graad

Step	Language	Word	Meaning
1	Dutch	graad	degree; degree of angle
2	Middle Dutch	graet	—
3	Latin	gradus	a step, pace; a stage, degree; a rank
4	Proto-Italic	graðus	—
5	Proto-Indo-European	gʰradʰ-	—

Every word from Proto-Indo-European suHrós →Every word from Proto-Germanic sūraz →Every word from Proto-West Germanic sūr →