piz·za (p?t?s?)n. A baked pie of Italian origin consisting of a shallow breadlike crust covered with toppings such as seasoned tomato sauce, cheese, or sausage.[Italian, pie, tart, pizza, of Germanic origin; akin to Old High German bizzo, pizzo, bite, morsel; see bheid- in Indo-European roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.pizza (?pi?ts?) n (Cookery) 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]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014piz?za (?pit s?) n., pl. -zas. a baked, open-faced pie consisting of a thin layer of dough topped with tomato sauce and cheese, and often peppers, sausage, mushrooms, etc. Also called piz?za pie`.[1930?35;