Idea of Waning Gibbous Icon
The icon is shaped like a full circle. However there is a shaded crescent shape part to the right that makes up a quarter of the circle. The crescent shaped part is covered with dots.
This Waning Gibbous icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.