- Defined by the American Heritage Dictionary as
n. Coolness and composure, especially in trying circumstances.
[French : sang, blood (from Old French, from Latin sanguis) + froid, cold (from Old French, from Vulgar Latin *frigidus, alteration of Latin fr?gidus)]
- Defined by the Merriam-Webster Online Dictionary as:
Pronunciation: \ˈsäⁿ-ˈf(r)wä\
Function: noun
Etymology: French sang-froid, literally, cold blood
Date: 1750
: self-possession or imperturbability especially under strain