The story
From French; named after César Roux, the surgeon who first described it.
Etymology from Wiktionary, CC BY-SA 4.0.
Roux-en-Y
Today it means: A surgical technique where the digestive tract is rearranged into a Y-shaped connection, usually by creating a small stomach pouch and rerouting the small intestine. It is most commonly used in weight-loss surgery (gastric bypass) to reduce food intake and calorie absorption. Full definition →