cascata

The Latin verb cadere meant to fall, and from it Vulgar Latin formed the intensive cascāre, to fall heavily. Italian shaped this into cascata, a waterfall, and the word entered French as cascade in the sixteenth century. The sound of the word itself seems to tumble, each syllable dropping into the next.

French engineers of the seventeenth century adopted cascade as a technical term for artificial waterfalls in garden design. The gardens at Versailles, begun in 1661 under André Le Nôtre, featured elaborate cascades where water descended through sculpted stone channels. The word moved from wild nature to controlled architecture.

English took cascade from French by the mid-1600s. At first it meant only a waterfall, natural or artificial. But by the 1800s, the metaphorical use had arrived: a cascade of events, a cascade of consequences. Anything that fell in stages, each triggering the next, was a cascade. The water was gone; the falling remained.

In the twentieth century, cascade entered computing. Cascading Style Sheets, cascade failures, cascade deletes. Programmers recognized that the word perfectly described systems where one action triggers a chain of dependent actions. A Latin verb for falling now describes how websites render their fonts.