POPSUGAR Food Definition Gluten Definition: Gluten by Food 3/02/07 0 Shares Like us on Facebook gluten A protein group found in wheat and most (but not all) other flours. It is a sticky substance that resembles chewing gum and is indigestible by some people. Read More DefinitionGluten Get inspired with our daily newsletter Tech Vegetarian Food Love and Sex DIY Home Sign up with By signing up, I agree to the Terms and to receive emails from POPSUGAR. celebrity_soup 8 years bad gluten bad!! celebrity_soup 8 years bad gluten bad!! Food 8 years It's in a lot of foods, including most breads, pastas, cookies, cakes, etc. Pretty much anything made with regular all-purpose flour contains gluten. My-Opinion 8 years eww!!!! I wonder if you could make a post of foods with that in it? grl-in-the-world 8 years Ah, gluton, my mortal enemy! grl-in-the-world 8 years Ah, gluton, my mortal enemy!