Where does “sang froid” come from?

sang froid (English) comes from French sang-froid, from French sang, from Old French sanc, from Vulgar Latin sanguem, from Latin sanguinem, from Latin sanguen, from Latin san-, from Proto-Indo-European h₁sh₂-én- — blood.

sang froid (English): Alternative spelling of sang-froid

Definitions

Alternative spelling of sang-froid

Ancestry of “sang froid”, step by step

Step	Language	Word	Meaning
1	French	sang-froid	sang-froid, calmness, calm
2	French	sang	blood
3	Old French	sanc	blood
4	Vulgar Latin	sanguem	—
5	Latin	sanguinem	accusative singular of sanguis
6	Latin	sanguen	—
7	Latin	san-	—
8	Proto-Indo-European	h₁sh₂-én-	—
9	Proto-Indo-European	h₁ésh₂r̥	blood

Every word from Proto-Indo-European h₁ésh₂r̥ →Every word from Proto-Indo-European h₁sh₂-én- →Every word from Latin san- →