Swelling of a limb; especially (more fully "†phlegmasia alba", "phlegmasia dolens") phlegmasia alba dolens; an instance of this. Later also: phlegmasia cerulea dolens.
phlegmasia/flɛɡˈmeɪsɪə/ /flɛɡˈmeɪzɪə/ /flɛɡˈmeɪʒə/
Early 18th century (in an earlier sense). From post-classical Latin phlegmasia from ancient Greek ϕλεγμασία inflammation, swelling (Hippocrates) from ϕλέγμα + -σία.