polyfill noun 3verb 1forms 3 noun3 •A plugin that provides the functionality of newer browsers to older versions.A common way to group elements for collective use by JavaScript is to assign them the same (CSS) class and then to use getElementsByClassName(). Possibly with a polyfill for the "certain old browser". — 2016 •A synthetic textile used for bulk or insulation, e.g., in stuffed animals or coats.The racks include blouses and sweaters and some polyfill vests, with corduroy coats and outerwear due to be in stock as the weather cools. — 1981 •An algorithm to fill a polygon with a particular color.In the process i have come up with the following algorithm , and i wonder if it is a good one (i.e. fast), and also if anyone can give me tips on any other fast polyfill algoritm^([sic]). — 1992 verb1 •To create or apply a polyfill.See the FAQ. Or polyfill String.prototype.trim() if necessary and just call .trim(). — 2017 formspolyfilled · polyfilling · polyfills