Idea of Loader Icon
The image is a circle made of circles. The circles vary in size. Starting from the bottom left is the smallest circle that looks like a dot. Going clockwise, the circles get bigger until the biggest one is right next to the dot at the bottom.
This is the Loader icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.