a flat, open-faced baked pie of Italian origin, consisting of a thin layer of bread dough topped with spiced tomato sauce and cheese, often garnished with anchovies, sausage slices, mushrooms, etc.
a dish of Italian origin consisting of a baked disc of dough covered with cheese and tomatoes, usually with the addition of mushrooms, anchovies, sausage, or ham
[C20: from Italian, perhaps from Vulgar Latin picea (unattested), from Latin piceus relating to pitch²; perhaps related to Modern Greek pitta cake]
1935, from It. pizza, originally "cake, tart, pie," of uncertain origin. Klein suggests a connection with M.Gk. pitta "cake, pie," from Gk. pitta "pitch." See also pita. Pizzeria is attested from 1943, likely in use in Amer.Eng. from 1930s.