From preload + -er or pre- + loader. <span class="searchmatch">preloader</span> (plural <span class="searchmatch">preloaders</span>) Agent noun of preload; one who, or that which, preloads. (web development, historical)...
<span class="searchmatch">preloaders</span> plural of <span class="searchmatch">preloader</span>...
loader frontloader low loader multiloader muzzleloader muzzle-loader <span class="searchmatch">preloader</span> self-loader side-loader skid loader speed loader top loader turboloader...