hemoclysms

Noun

hemoclysm (plural hemoclysms)

1. A violent and bloody conflict, a bloodbath; specifically (chiefly with capital initial), the period of the mid-twentieth century encompassing both world wars.
   • It's very possible, therefore, that future historians will consider these events to be mere episodes of a single massive upheaval -- the "Hemoclysm", to give it a name (Greek for "blood flood") -- which took the lives of some 155 million people.1998, Matthew White, “30 Worst Atrocities of the 20th Century”, in Twentieth Century Atlas