γαστήρ

Greek gastēr meant stomach, belly, or womb -- the general cavity of the lower torso. Homer used it to describe both the hunger that drove men to war and the place where wounds killed them. The word had no embarrassment attached to it. A gastronomos, literally a belly-ruler, was someone who understood the art of eating well. Archestratus of Gela, writing around 350 BCE, composed a poem called Hedypatheia (Life of Luxury) that was essentially the first food guide -- a tour of the best fish markets and bakeries in the Greek world.

Medical use developed alongside culinary use. Galen described gastric diseases in detail, including what was probably peptic ulcer disease. The adjective gastrikos appeared in Greek medical texts, and Latin borrowed it as gastricus. Medieval physicians understood that the stomach transformed food into something the body could use, though their explanations -- involving innate heat and concoction -- were wrong in the details.

William Beaumont, an American army surgeon, made gastric physiology visible in 1822 through an extraordinary accident. Alexis St. Martin, a fur trapper, survived a shotgun wound that left a permanent hole (fistula) in his stomach. Beaumont spent years conducting experiments through the opening, observing gastric juice in action, timing digestion, and identifying hydrochloric acid as the stomach's primary agent. His 1833 book Experiments and Observations on the Gastric Juice was the first empirical study of human digestion.

English gastric appeared in the 1650s. The word now splits cleanly between medicine and food culture. Gastric bypass surgery reshapes the stomach to treat obesity. Gastronomy celebrates the art of cooking. Gastroenterology treats the digestive tract. The Greek belly-word has colonized both the hospital and the restaurant, and both camps claim it as their own.