cirrocumulus[sir′ō kyo̵̅o̅′myə ləs]
the type of white cloud that resembles a small puff, flake, or streak, found at high altitudes and consisting of ice crystals and water droplets; mackerel sky
A high-altitude cloud composed of a series of small, regularly arranged cloudlets in the form of ripples or grains.
- (physics, meteorology) A principal high-level cloud type appearing as a thin, white patch of cloud without shadows, composed of very small droplets in the form of grains or ripples. The elements may be merged or separate, and more or less regularly arranged; they subtend an angle of less than 1° when observed at an angle of more than 30° above the horizon. Holes or rifts often occur in a sheet of cirrocumulus. Abbreviated Cc.