<Li> Media: Slider </Li> <P> A slider is an American term for a steam - grilled sandwich, typically around 2 in (5.1 cm) across, made with a bun . The term primarily refers to small hamburgers, and is frequently used incorrectly to describe any small sandwich made with a slider roll . </P> <P> The term was originally used to describe the onion - steamed small burgers at White Castle restaurants . White Castle trademarked the spelling variant "Slyder" and used it between 1985 and 2009 . </P> <P> Sliders can be served as hors d'oeuvres, snacks, or entrées . </P>

Where did the term sliders for hamburgers come from